As I understood it, it's up to the user to set various recovery methods. Proton can't help you with recovery.
https://proton.me/support/set-account-recovery-methods
Unfortunately nostr:nprofile1qqsdu74x8vw8aqylv6n8hhxjh4xf22sfe4fwuq0d0ke435ym4ktlssqpz4mhxue69uhhyetvv9ujumt0wd68ytnsw43qzxthwden5te0wfjkccte9eeks6t5vehhycm99ehkuegprpmhxue69uhkummnw3ezucm0d9hxvatwvshxzursdn707c posts from Mastodon so they can't clear this up here.