Hi @mollzmp!
Hope you don’t mind but I’ve moved your message out into it’s own topic so that we can address that error separately here.
The mention of “No credentials found for given 'iss'” in the error seems to suggest that there’s something incorrect with the authentication credentials it’s using.
Can you share a screenshot showing the setup of that Webhooks by Zapier action? I’d like to take a look at that to see if there’s anything on the setup of there that might be what’s causing the issue. Remember to remove/hide any private information (like names, emails, API Keys etc.) from any screenshots before sharing.
Look forward to hearing from you on this!