@Talha nrf52480 allows you to use any pins in the range 0 to 31 for UART: nrf52 UART pins - Nordic Q&A - Nordic DevZone - Nordic DevZone
The solution for us was to use IO2 as UART0 RX (we don’t care about UART0 TX). Note you can’t use IO1 as that’s occupied by RAK5860, it’s used to turn the modem on. Hope this helps!