2000 Lincoln Continental, parked it and it was fine, the next day the back went all the way down, compressor works but doesn't rise

Assuming all is right with your new air suspension, the problem could be in the computer. If you can afford it, take the car to a trusted mechanic and have the settings for the computer checked. If you want to get by cheap, disconnect the ground cable from your battery and leave off for 24 hours. This will return the computer to the default settings.