I have received an email saying that I can now use custom Claims no-namespaced but if I want to continue using my current custom Claims namespaced, I understand that I do not have to do anything right?
and that will continue to function also from 2023
I believe name-spacing custom claims still works, and it is still recommended.
Auth0 allows namespaced and non-namespaced claims with restrictions to avoid collisions with Auth0’s internal processes. If custom claims collide with restricted or non-restricted claims, the transaction will not fail, but the claim will not be added to your tokens. For this reason, we strongly recommend using namespaced claims.