diff --git a/src/cloud/api.ts b/src/cloud/api.ts
index 77b3834..b6d5189 100644
--- a/src/cloud/api.ts
+++ b/src/cloud/api.ts
@@ -13,6 +13,10 @@ const f = <T>(
   }).then(async (res) => {
     const text = await res.text();
     const resBody = (text ? JSON.parse(text) : undefined) as T;
+    if (!res.ok) {
+      const errorBody = resBody as undefined | { message?: string };
+      throw new Error(errorBody?.message ?? res.statusText);
+    }
     return resBody;
   });
 
diff --git a/src/cloud/index.ts b/src/cloud/index.ts
index 5d15148..06a87f1 100644
--- a/src/cloud/index.ts
+++ b/src/cloud/index.ts
@@ -2,11 +2,25 @@ import { startFlow } from "../public-methods";
 import { init as flowsInit } from "../init";
 import type { FlowsCloudOptions } from "../types";
 import { hash } from "../utils";
+import { log } from "../log";
+import { validateFlowsOptions, validateCloudFlowsOptions } from "../validation";
 import { api } from "./api";
 
 export * from "../index";
 
 export const init = async (options: FlowsCloudOptions): Promise<void> => {
+  const cloudValidationResult = validateCloudFlowsOptions(options);
+  const coreValidationResult = validateFlowsOptions(options);
+  const validationResult = !cloudValidationResult.valid
+    ? cloudValidationResult
+    : coreValidationResult;
+  if (validationResult.error)
+    log.error(
+      `Error validating options at: options.${validationResult.error.path.join(".")} with value:`,
+      validationResult.error.value,
+    );
+  if (!validationResult.valid) return;
+
   const apiUrl = options.customApiUrl ?? "https://api.flows-cloud.com";
 
   const flows = await api(apiUrl)
@@ -15,8 +29,11 @@ export const init = async (options: FlowsCloudOptions): Promise<void> => {
       userHash: options.userId ? await hash(options.userId) : undefined,
     })
     .catch((err) => {
-      // eslint-disable-next-line no-console -- useful for debugging
-      console.error(`Failed to fetch flows from cloud with projectId: ${options.projectId}`, err);
+      log.error(
+        `Failed to load data from cloud for %c${options.projectId}%c, make sure projectId is correct and your project domains are correctly set up.\n`,
+        "font-weight:bold",
+        err,
+      );
     });
 
   flowsInit({
@@ -28,16 +45,20 @@ export const init = async (options: FlowsCloudOptions): Promise<void> => {
       const { flowHash, flowId, type, projectId, stepIndex, stepHash, userId } = event;
 
       void (async () =>
-        api(apiUrl).sendEvent({
-          eventTime: new Date().toISOString(),
-          flowHash,
-          flowId,
-          projectId,
-          type,
-          stepHash,
-          stepIndex: stepIndex?.toString(),
-          userHash: userId ? await hash(userId) : undefined,
-        }))();
+        api(apiUrl)
+          .sendEvent({
+            eventTime: new Date().toISOString(),
+            flowHash,
+            flowId,
+            projectId,
+            type,
+            stepHash,
+            stepIndex: stepIndex?.toString(),
+            userHash: userId ? await hash(userId) : undefined,
+          })
+          .catch((err) => {
+            log.error("Failed to send event to cloud\n", err);
+          }))();
     },
     onLocationChange: (pathname, context) => {
       const params = new URLSearchParams(pathname.split("?")[1] ?? "");
@@ -50,6 +71,9 @@ export const init = async (options: FlowsCloudOptions): Promise<void> => {
         .then((flow) => {
           context.addFlowData({ ...flow, draft: true });
           startFlow(flow.id, { startDraft: true });
+        })
+        .catch((err) => {
+          log.error("Failed to load preview flow\n", err);
         });
     },
   });
diff --git a/src/init.ts b/src/init.ts
index b3c404e..f9085f1 100644
--- a/src/init.ts
+++ b/src/init.ts
@@ -1,6 +1,7 @@
 import { FlowsContext } from "./flows-context";
 import { changeWaitMatch, formWaitMatch, locationMatch } from "./form";
 import { addHandlers } from "./handlers";
+import { log } from "./log";
 import { endFlow, startFlow } from "./public-methods";
 import type { FlowsInitOptions } from "./types";
 import { validateFlowsOptions } from "./validation";
@@ -15,8 +16,7 @@ export const init = (options: FlowsInitOptions): void => {
 const _init = (options: FlowsInitOptions): void => {
   const validationResult = validateFlowsOptions(options);
   if (validationResult.error)
-    // eslint-disable-next-line no-console -- useful for user debugging
-    console.error(
+    log.error(
       `Error validating options at: options.${validationResult.error.path.join(".")} with value:`,
       validationResult.error.value,
     );
diff --git a/src/log.ts b/src/log.ts
new file mode 100644
index 0000000..6790005
--- /dev/null
+++ b/src/log.ts
@@ -0,0 +1,11 @@
+export const log = {
+  error: (message: string, ...args: unknown[]): void => {
+    // eslint-disable-next-line no-console -- ignore
+    console.error(
+      `%cFlows%c ${message}`,
+      "color:#fff;background:#ec6441;padding:2px 4px;border-radius:4px",
+      "",
+      ...args,
+    );
+  },
+};
diff --git a/src/render.tsx b/src/render.tsx
index fa3bc8d..b0bd0fb 100644
--- a/src/render.tsx
+++ b/src/render.tsx
@@ -4,6 +4,7 @@ import type { FlowModalStep, FlowTooltipStep, Placement } from "./types";
 import type { FlowState } from "./flow-state";
 import { isModalStep, isTooltipStep } from "./utils";
 import { Icons } from "./icons";
+import { log } from "./log";
 
 const DISTANCE = 4;
 const ARROW_SIZE = 6;
@@ -60,8 +61,7 @@ const updateTooltip = ({
       }
     })
     .catch((err) => {
-      // eslint-disable-next-line no-console -- Error log
-      console.warn("Error computing position", err);
+      log.error("Error computing position\n", err);
     });
 };
 
diff --git a/src/validation.ts b/src/validation.ts
index 1d089fb..e9f0676 100644
--- a/src/validation.ts
+++ b/src/validation.ts
@@ -28,6 +28,7 @@ import type {
   CompareValue,
   UserPropertyMatchGroup,
   FlowsInitOptions,
+  FlowsCloudOptions,
 } from "./types";
 
 const WaitOptionsStruct: Describe<WaitStepOptions> = object({
@@ -134,7 +135,7 @@ const FlowStruct: Describe<Flow> = object({
   ),
 });
 
-const OptionsStruct: Describe<FlowsInitOptions> = object({
+const OptionsStruct: Describe<FlowsInitOptions> = type({
   flows: optional(array(FlowStruct)),
   onNextStep: optional(func()) as Describe<FlowsInitOptions["onNextStep"]>,
   onPrevStep: optional(func()) as Describe<FlowsInitOptions["onPrevStep"]>,
@@ -148,6 +149,9 @@ const OptionsStruct: Describe<FlowsInitOptions> = object({
   customApiUrl: optional(string()),
   onLocationChange: optional(func()) as Describe<FlowsInitOptions["onLocationChange"]>,
 });
+const CloudOptionsStruct: Describe<Omit<FlowsCloudOptions, keyof FlowsInitOptions>> = type({
+  customApiUrl: optional(string()),
+});
 
 const validateStruct =
   <T>(struct: Describe<T>) =>
@@ -164,6 +168,7 @@ const validateStruct =
 export const isValidFlowsOptions = (options: unknown): options is FlowsOptions =>
   OptionsStruct.is(options);
 export const validateFlowsOptions = validateStruct(OptionsStruct);
+export const validateCloudFlowsOptions = validateStruct(CloudOptionsStruct);
 
 export const isValidFlow = (flow: unknown): flow is Flow => FlowStruct.is(flow);
 export const validateFlow = validateStruct(FlowStruct);