Troubleshooting Domains
How to check your DNS records (DNS Lookup Tool)
Loops occur when two Triggers either feed into each other or one Trigger feeds back into itself, creating an infinite loop of actions.
You may be having trouble sending SMS messages through the app. This article will help you determine the issue by going through your Twilio account.
You may want to send a test email to yourself, or perhaps you want to run yourself through BILT using a workflow as a test/trial run. Both are easy to do and yet slightly different.