My newly bought index just arrived today and it works fine(bit uncomfortable compared to cv1 though). But I have this issue that if I try to pair up trackers where the 2 controllers are already paired up there will be one tracker unpaired, or if I first try to pair up the 3 trackers then one controller won't pair up.

In summary I can't pair up both trackers and knuckles

Has anyone ever had this issue before? I don't really know what to do, I've tried to restart steamvr, restart pc, reinstall steamvr, change usbs, etc