I too am having problems getting email notifications from my managed backup account since the settings changed on Oct 28.
I was using SMTP through a MS365 email account. It was working fine till the change.

I can't open a support case because I can't get logged into the system. I've tried to go through the "forgot password" dance but never get a reset email.

I attempted to register again with the support system thinking I may not have yet, but get a
message that my email is already in use.

Edit: I was able to open a ticket through the main website.

thank you