The workflow had several changes to comply with the Alfred Workflows Gallery, this means that the self updater was removed and also the old way to configure the workflow was removed.
If you already have and older version of this workflow configured it should work without problems, but if you are a new user and you want to install this workflow in Alfred 4 in order to configure it you need to set Environment Variables.
This is a list of Environment Variables that you can use to configure the workflow.
language
the value can been_EN
,es_ES
orsv_SE
base_currency
the value can beMXN
or multiple currencies separated by commaMXN, EUR
fixer_apikey
Enter your Fixer API Keycoinmarket_apikey
Enter your Fixer API Keytime_format
the value can be["j F, Y, g:i:s a"]
time_zone
for exampleAmerica/Mexico_City
vat_percentage
for example16%