A couple of items to check.
1) Do you have the LCI panel on the wall. You can remove the bezel (should just pop off, then remove the LCI panel (pops off), unplug it, wait 10sec then plug it back in and let it reboot. Then try to move the slide again.
2) Do you know where the slide controller is? Probably in the storage compartment. Can you see flashing red lights on it? Count them, the series (number) will indicate the issue.
3) There might be available mobile techs that can come to you in your area. I just google it. Do you have Good Sam tech support? Call them.
4) Every slide has a manual operation. The crank handle should also be in the cargo compartment. The bottom section (outside) of the slide should have a small hole with a rubber grommet to insert the crank into. You can see where the socket end of the cranck handle will slip onto the rod for the manual operation.
Don & Donna Stout
E-9 Anchor Clanker
Full timers since 2010
2017 North Point 381 DLQS
2015 F-250 6.7 w/Timbrens