VX2 remote + bluetooth nrf51 = connection issue

Hello,

I bought a bluetooth receiver based on nrf51. I loaded the appropriate firmware via my ESC FSESC 4.20 plus. The problems started when I wanted to use Bluetooth and use the board at the same time (I connect to the board using VX2 remote from Flipsky). Unfortunately, when I configure Bluetooth, VX2 remote does not work and vice versa. I suspect the problem is with the UART port.

Does the ESC I have support two UART ports? (has two ports on board). If so, is there any way to use bluetooth and vx2 remote at the same time?

Have a good one, Marcin