Circle ask "nickname" to access a circle

# What's happening?

User is asked username or nickname to access a circle, it's annoying for them.

Why this is happening on some users ?

What I know today is, users conserned are Berengere / Andy (HD users )

Make hubl Better

HD help

HD Paris gestion

HD place publique

User Possibly affected by ex USERNAME-2

https://api.nouvelle-aquitaine.happy-dev.fr/admin/djangoldp_account/ldpuser/56/change/?_changelist_filters=q%3Dbere

https://api.paris.happy-dev.fr/admin/djangoldp_account/ldpuser/21/change/?_changelist_filters=q%3Dand

Old accounting Protocol