Hi! I’ve responded to the original issue I opened, in which I did provide the email invite template, which I have not customized or modified in any form or way at all.
I hope that that information helps, and as I did reference in the issue I opened, I am fully prepared and willing to provide your team access to the system logging for my instance, which has been running on the most verbose level it can be since I first discovered this issue, just let me know.