Since we're on a cryptocurrency board, I don't see why such providers should be listed. Otherwise, we could start a list of everything to list every shop, even if they have nothing related to crypto. What about making a list of vibrator shops.
If you have any question when you visit a VPN service provider, you can always check their Support page.
In this case, if you weren't rude, you would discover that ProtonVPN has Four Payment Options.
These are:
- Credit card
- PayPal
- Bitcoin
- Cash
You have to sign up at first under the Free plan and then upgrade your plan from Dashboard to pay with Bitcoin.