If the forums here ask you to create a new account and you’ve already logged into the forums before, then you have probably changed your email address on the main LDAP server (FreeIPA).
Discourse does not sync with the LDAP server for some annoying reason - it keeps its own local DB of users.
To remedy this, you need to either:
- Update your email address on FreeIPA (ipa.freeside.co.uk) to match the one on the forums
- Update your email address on the forums to match your account on FreeIPA. If you don’t have any devices still logged in, contact an admin.