Issue
Should you be utilizing Heroku AppLink, it is necessary to allowlist the following IP addresses to facilitate token management for authorization and connections. Failure to do so may result in authorization failures, accompanied by an "IP restricted" error description.
Resolution
To avoid the error, the following IP addresses must be allow-listed:
34.196.65.106
52.72.167.192
54.225.224.8
54.205.148.219