Hi!
several months ago I had real trouble when changing my forum user's E-Mail address to a t-online.de address:
The confirmation message to re-activate the user never arrived, and it took quite a long time discussing with support (it was "tonyr") until the account was reactivated using a temporary E-Mail address.
When I tried to change the E-Mail address again a few minutes ago, the same thing happened:
No confirmation message arrived at my t-online.de mailbox, and I could no longer log in as the account is disabled now.
As I can receive messages from about anywhere in the world, except the Blackmagic Forum, I wanted to bring the topic to your attention.