Emails not sending

We are running:

WordPress 5.8.3
PHP 7.3
BuddyPress 9.1.1
WP Mail SMTP 3.2.1

Same problem. Invitees dont get invitation emails.

Also having the same issue. Every mail is sent except the email invites, and it was working a couple of days ago, nothing has been changed.

I got it to work following this: https://gist.github.com/boonebgorges/03945bad2fd6870f608eb5affd853f83
The author made this quick fix that rebuilds the email templates.
After reading the thread I remembered that a week ago I “repaired” the email templates with an internal BuddyBoss tool and it removed the ones IA uses.