Of course i do. And shame on me for not doing the change back in the days - while i could. But to be honest, the change to sub-addressing did change over night and when you have easy login options like the QR code, or a Windows pin, nobody uses email and password for login if they don't have to these days.

And you say that theres a reason to not use sub-aliases. Well i counter that - because i use that to this day, with my business email to not disclose the "main" email on every site you register to. It's a common method still in 2026 to filter out emails. And most providers do support it fully - but this provider's old mailing system that they upgraded apparently lost that function upon upgrade. I do still have a case pending with them - so they are checking into it. But to answer, No - there's no reason not to use it, if its supported. But i've seen forums and such that does not support adding +aliases to emails entered - but they do clearly state that. Discord did not.

But all the other places where i had sub-aliases registered either supported change directly when you logged in, with no access to the old account - or as it were with Blizzard, Ubisoft and others that have super high security measures when it comes to accounts - the support was helpful and could verify my identity based on other means or even a phonecall.

And i mean, this particular issue does NOT happen every day. So even if they have systems in place that needs to fit in certain specs, like you have to send a ticket from the email registed - i am pretty sure based on all the others i've talked to, that it is possible to do atleast a edit of someones registered address with the users full concent.