Good morning afternoon evening all

I have a Audi 2008 A3 1900 TDI I've had it a few months now.
the problem is is the tailgate will not open off the remote
I don't know and I can't find in the owner's manual anything to do with where the fuse location is is everything around it works fine lights rear wiper
just doesn't open and it is a real @#$%arch
I'm hoping someone out there that has KNOWHOW to resolve
rather than throwing money away for no reason as I have already done with this car
Im hoping someone one will help
thank you