Given that, it sounds like you may have somewhat of a dead zone in between the Orbi router and Orbi satellite, and it's just that a couple of your devices have better antennas and are able to get the weak signal, whereas some of your other devices have smaller/fewer antennas and see that spot as a dead zone. It's just like how you and someone else can be right next to each other with your different-model cell phones, and be using the same carrier, and one of you can have a weaker signal than the other, or even no signal, while the other can be fine. The signal coverage isn't uniform. As you increase the distance from the router or satellite, the signal attenuates, and is weaker. Obstructions, like walls, furniture, floors/ceilings, etc., will increase the attenuation, and decrease the signal strength at a give location.
I suspect you may be able to improve your situation just by moving the router and satellite a little closer together. It may be as simple as just leaving everything connected where it is and stretching the cords to their max in the direction of the other Orbi. If you can move the router a couple feet toward the satellite, and the satellite a couple feet toward the router, that might be enough to fix your issue. If not, maybe moving the Orbi satellite one outlet closer to the router will (or plugging it into an extension cord) will. Alternatively, if you don't have any wired devices plugged into the satellite, try putting it in a different room.
Basically, I think you have a dead zone, but a couple of your devices are powerful enough they aren't affected by it.
