[HELP] bltouch probe won't extend during auto leveling

[RemagOfficial]

I recently installed a bltouch on my anycubic mega x by following this repo but when I try and run the auto leveling option the probe doesn't extend. it does extend twice on startup and the red led is lit continuously as I've seen in people's videos about installing one, I've checked my wiring and tried both the _10 and _11 firmwares (v0.0.2 main board and server header in S1) and neither changed anything so I have no idea how to proceed since I've followed everything correctly and it's not working.