F100/70 EFB weights issue

[Unknown_Av8er]

Having an issue where I am unable to enter or modify any weights via the EFB - this includes the ZFW and happens even when I "import simbrief weights" - all the cargo weights do is flash 0

Note: I am able to alter the PAX number just not cargo weights - have tried with GSX handling ticked and un-ticked

Any help is appreciated!