I have not had trouble with setting up my keayboard in the past through the blue tooth manager and bluze is not working I have tried several option and one was working and I failed the method and could not retreive the pin and now it is not working any longer I need assistance and an upgrade update on the blue tooth connection and manager. I can not ever attempt to connect now and set up the device/s.
what version of UM are you using?.
I am using 16.04 LTS
start by checking your update settings which may help, run all updates and see if that fixes the problem first: