1) Use a VPNHow do you evade the spam ban?
(HideMe or Proton VPN are free and no-log)
And don't forget to tell your device to require VPN connection so you don't have any connection drop leaks.
2) Sign up with a new naming convention+email. Signed up with Proton Mail last time? Do so with Tutanota this time.
Bonus:
3) Learn to change your browser fingerprint. The Chameleon extension makes this very easy