iPad Pro Apple Folio “not supported keyboard“

Actually a possible fix. One that worked for me. After doing Basic reset with some success that lasted as long as I didn’t close the lid. I tired the following. I slightly flexed the connection magnet area up and that worked. I still hard some issues when I closed the cover. I ended doing the hard reset holding fingerprint sensor down with the power button in my case until apple logo appeared. I did this with the folio connected. This seems to have work. My folio looks new with no damage or metal showing. I am not certain this is a full fix for everyone but it has worked for me so far. I did check the pins and seating area for issues initially. I found three connector seemed to flex ever so slightly down as if spring loaded. I did clean with a damp cloth and then dryer area.. The areas were all basically clean. I loved being able to use the keyboard Especially for Excel and OneNote. Hope this fix continues to work for me and also for others. When I said slightly flex the magnet contact area do so very carefully. This also took care of the associated issue of battery being drained to 15% or so from a full charge in the morning without being used. Hope this works for others.