Someone just got into my account and I’m not even bothered…

It’s an old throwaway account from like 5 years ago or something and the IP address shown in the email was located in France.

The weird things is, that there is now no trace of this email since they changed the password and basically made my account theirs now. It’s just vanished from my inbox?

I tried to submit a ticket but Ubisoft was useless - within 2 minutes they just closed it.

I’ve already created a new email and I’m sending all my details and online accounts over to that one.

My only concern is, if they have access to just one old Ubisoft account that I no longer care for - what’s the chance they can get into other accounts of mine? Etc. banking, social media, phone apps etc?