Have you tried resetting and re-pairing the blinds? When mine fall of the mesh every few months it takes a day or two of pairing attempts to get them back on the hub. Lots of times it will seem like it paired but doesn’t finish completely.
I can tell it paired properly because the blind will go down and back up 1cm by itself after the pairing successfully completes. Until I see the blind do that up/down dance, I know it’s not paired even if the light stops blinking.
It can be a pain and makes me feel like I’m going mad, but eventually they pair and stay solid for a while. I wrote about it here last year: The IKEA Fyrtur shade pairing dance of madness
