[email protected]

It’s blocked from lemmy.world. I’d recommend using LASIM and migrating to another instance like lemm.ee (note: you will need to manually resubscribe to [email protected] on your new account, since LASIM won’t be able to see it).

Releases · CMahaff/lasim

Move your Lemmy settings from one account to another - CMahaff/lasim

GitHub
Btw, that user has also requested deletion of [email protected] on lemm.ee and it is in consideration. If this is the reason for your switch, I’d wait for their action.
Where can we learn more about that user or their request?
I forgot the link but it’s in one of my old comments in this very thread.