Can pair, but not IKEA bulbs


So I have a CC2531 and run the Home Assistant plug-in (Hassio). Everything seemed to be working just fine when suddenly I can’t pair more IKEA bulbs. I can still pair IKEA remotes however.

Right now, I have 13 devices. I managed to pair an IKEA buld this morning and have paired a couple of remotes since, but for the life of me do not manage to pair another bulb. As I am going crazy, I’d really appreciate if anyone has any pointers.