I had signed up for a few email accounts for my Lineage 2 game. They suspended those accounts saying I violated their TOS. I looked at their TOS, point by point, and not one single violation. I asked them what point in TOS did I violate and they would not tell me. So I lost my game accounts, at least for now, because of this nonsense. I never misused or abused those accounts and it was only so I could sign onto my Lineage 2 game. Just doesn't make sense and their support was terrible. I would stay as far away from ProtonMail if I were you, unless you don't mind just losing your accounts at any moment, for any reason...basically because they said so. Sad.