Yep, for a while. And I know that they have been set up properly because both ProtonMail and SimpleLogin allow to check if all’s set up properly.

Yeah I find their behavior very unprofessional.

Talking with them was not pleasant from my point of view: I either got unclear/vague answers or automatic copy-pasta from them.

They mean the domain (the dns provider of my domain).

My email is not a subdomain of nja.la. It’s @something.net.