No worries, it happens!
As an FYI, I took all of the code from the att_fix branch and merged it into the main branch: https://gitlab.com/kop316/vvmd/-/merge_requests/34
I am pretty certain the only issue is that AT&T changed how it obfuscates it’s password code: https://gitlab.com/kop316/vvmd/-/issues/8
Assuming that is the case, and you have an Android Phone handy, we should be able to fix that.