MailerLite module authorization issue

:bullseye: What is your goal?

Use MailerLite module

:thinking: What is the problem & what have you tried?

Since 2 days it started throwing an error.

:clipboard: Error messages or input/output bundles

[401] Please provide account id in header X-Acc-Id.

:camera_with_flash: Screenshots (scenario flow, module settings, errors)

Hello,

According to the MailerLite API docs, a 401 error code means the API key is invalid.

Please create a new connection with the correct API key and try again. Maybe your expired?

If that doesn’t help, please contact support dirrectly.

Have a nice day,
Michal

The token is fresh, I verified it.

The error is clear - they started requiring an additional header which Make module doesn’t support.

Yes but possibly no. So additional note. MailerLite does not document this header in their official API or changelog, and it’s not listed on any GitHub resources, including ones updated just a few days ago.

So it is possible that this is Make.com app related error (not MailerLite change) so please, create support ticket.

Have a nice day,
Michal