LND is not functional as they still don't support BOLT12.
Yes, requires CLN until the ecosystem (cough LND) finally starts using BOLT12.
(Phoenix would work but they don't support descriptions yet, but working on a workaround for that).
Descriptions may be the issue.
I never have problems with CLN bolt12 on my start 9 connected directly through the GUI.
@BitcoinMechanic said this during his AMA. It may still apply:
Descriptions may be the issue.
I never have problems with CLN bolt12 on my start 9 connected directly through the GUI.
Good luck.