This giving receipt for Southwest Church https://admin.southwestchurch.com/Communications/System/42 isn't working. Either the tokens aren't correct or it's not pointing to the correct page. Simple Donation noticed it was going to my.southwestchurch.com . I looked at the code in the message body but I'm not sure where to make these changes.
The lava in that communication template was using the Public Application Root global attribute. The value for that attribute is https://www.southwestchurch.com/. The Acme SSL cert did not include the "www" subdomain. In only included admin.southwestchurch.com and southwestchurch.com. So when clicking on the link, you'd get the browser error about visiting an unsecured site. I added the www subdomain to the Acme cert and renewed it. I suspect that was the issue.