Deleted the App and data and reinstalled theApp, and now I can create new groups, but all my old groups are gone. Also lots of errors when I try to do anything. Still can’t add any devices into...

My Phone got upgraded to KASA 3.0.0 and all my Groups are gone and I cannot create new Groups/Rooms. I no longer see ANY of my groups of devices in the App and cannot create any!! Also, I cannot add...