is it a power problem (panel won't light), a password problem (you forgot the password) or a touchpad problem (the keypad won't respond) or ??????
What is/isn't it doing? Have you tried removing ALL POWER (disconnect the batteries at the cables, not at the disconnect switch) and shore power. Let the trailer sit for about 5 minutes, then reconnect the batteries (remember POS and NEG are correct) and power up the control panel. See if it works.
If not, post more specifics about what it is doing.
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS