That’s cool you managed to integrate them into Gladys, I still haven’t. What’s your Matter border router?
For info: in: Intégration d'un hub Thread Aqara M100 - #44 par jcmoriaud, I noted last night that I have the same problem with the Bilresa on my Home Assistant test instance where I was able to add them, but there is a « blueprint » on HA that brings the functionality.