Alby would be the one that can help you recover Alby key material. They change the lnauth key when you create a master key, but in some cases you still have the old lnauth key.

This guide has helped some people: https://guides.getalby.com/user-guide/v/alby-account-and-browser-extension/alby-browser-extension/faqs-alby-extension/migrate-from-old-lndhub-setup