Proton had a sale and I wanted to try their services out, but they would not let me register while on Mullvad's VPN. Their support said to not use a VPN when registering.
I personally do not trust Proton.
I personally do not trust Proton.
It's annoying but it's a bog standard technique for avoiding spam or fraud.
A self-professed privacy-focused company that won't let privacy-conscious customers sign up does look a little sus.
They do accept Bitcoin payment, but not Monero. I wonder if that's because Monero is illegal for them, or just because they didn't bother to.
Easier to track people via Bitcoin than Monero?
AFAIK it's perfectly possible to sign up for a free Proton account without revealing your identity.