Nazgul 5 GPS module not detected please help.

[randcomCopter]

Hello I'm trying to install a BN-220 GPS module to my Nazgul 5 quadcopter. The flight controller is a Succex-E F4 with the number f405 printed on the board. I have correctly connected the BN-220 module to my flight controller as per the manufacturer wiring diagram. However I have no UART 4 port like the illustration shows, instead of I have a UART 3. I noticed printed on the board its specifically labelled as T4 for UART 4. I think I might have messed something up and somehow got my ports renamed. I installed a new configuration file because I accidently clicked "restore defaults". I got the configuration file from this link directly from Iflight. However there is two versions of my board V1 and V2 and I have no idea which one this is. I tried both files however and the port layout remained the same. The BN-220 just blinks with a blue light and the icon never lights up in BetaFlight.

This may have nothing to do with it tho.

For SucceX-E F4 V2 – Google Drive

drive.google.com