Protonmail suspends user account on behalf of National Defence Radio Establishment.
It has happen before https://thehackernews.com/2021/09/protonmail-shares-activists-ip-address.html
And it happen again, this time the National Defence Radio Establishment have conducted illegal surveillance which they reported in to Protonmail as spam to get the users account suspended, even the accounts that no mail has sent from.
This doesn’t seem unreasonable at all to me. They have terms of service, and if you break them, they suspend your account.