Proton and the end-to-end encrypted note-taking app Standard Notes are joining forces. We’ve long been admirers and are excited to welcome Mo and his team.
The plan you mentioned is sadly no longer available
Proton Visionary is a special plan for the strongest early supporters of our mission, and for this reason, we’re no longer offering it to new users. You can change your billing period any time (for example, change from monthly to annual or two-year billing), but please bear in mind that if you switch to another Proton plan, you won’t be able to switch back to Visionary.
The plan you mentioned is sadly no longer available
https://protonvpn.com/support/upgrading-to-new-protonvpn-plan/