Yes, I can save the IMAP successfully. I did another install on another hosting site and set the PHP to 8.1. and I still got the same issues. After that, I changed the PHP to 7.41, and behold everything works without issues. No unreadable emails. I think there are issues with 1.16.3 on PHP 8.0/8.1. Too bad you can't replicate it on your end. It would be such a coincidence that two hosting sites have bad installs of PHP8.0/8.1. Hosting sites are asking me to talk to the developers. So not sure what to do now.
