Issues with Bluetooth keyboard on 10.5 with IPad Air

Hello,

I’ve used multiple bluetooth keyboards on my IPad (a Logitech K380, and an Omoton KB066) and they seem to have the same problem. I pair them to my IPad, and then a while later they become unpaired. When I click on “Forget this device” and try to pair it again, it still doesn’t work. The only thing that works is to reset network settings, but only temporarily. After a while, they wont reconnect and I have to do everything again.