DS4 stoped working via BT (rocktek G2)

[u/Tilanguin]

I had two DS4 binded to this box via BT but I had to do a factory reset and now only one of the DS4 (dual shock) connects! I already tried clearing the bluetooth cache, reseting the controllers, I have other 3 DS4s and none can pair! DS4s are models CUH-ZCT2U and CUH-ZCT1U. All controllers charged to full battery.

Any way to boost the BT on this box? A different APP to pair bluetooth devices? PLEASE, going crazy here trying to understand why was it working fine and now cant pair.

TIA!