I have had the print monitor running via a wired ethernet connection to my router, and a completely wireless connection using an AP Bridge connected to the printer's ethernet port. I had a fully-functioning monitor that I could do scans with and all the other functions.
But having put my computer to sleep one night and shut the printer off, the next day I was still able to print to it wirelessly, but my nice HP panel won't open and says my printer is not installed and is not connected. It tells me to reinstall my printer software.
Not making any sense.