You can only open the boot by the key fob so not sure if it's the fob that's not working.( but saying that the fob does everything else it should do )

Humor me and test all under hood and under dash fuses with a test light or multimeter:

https://www.askmehelpdesk.com/cars-t...tml#post252145

Beyond that, test the switch and wiring to the boot latch for continuity. The internal wiring may have broken, due to opening and closing the boot so many times. You may need to carefully cut open the "conduit" to gain access.