>>350882887
For pairing issues: My general debug routine is to use the 'unpairall' function (google it) and unplug all the dongles. Start steamvr, pair the controllers, then plug a dongle in one at a time and pair the tracker until done.Then in steamVR assign the trackers as 'trackers' so they don't yeet themselves into controllers. 

>>350883247
Not pairing all at once sounds like a broken dongle. Try and identify which one is broken. 
If they all work independently then there's no hardware failure on any of the trackers or dongles, but something with the combination; such as the USB bus or some shit. 
Keep in mind that the headset has two 'dongles' inside it usually used for pairing controllers.