mac mini bluetooth issues

2011 mac mini 2.7GHz i7 8gb bluetotth 4.0

hey all!

anyone else having connectivity issues? i have a 6+, two mac b.t. keyboards & meeses, and a third party b.t. foldable keyboard that i used with my old android note 2.

had some serious issues and been on with tech support for four days in a row, escalated up and up. and this mornings tier two tech was trying to say my keyboard was at fault for not being able to do a force boot (command opt. r) or any other startup commands.

but i've just tried airdropping from my mac mini now running yosemite to my 6+ and it keeps telling me to go ƒ@*∫µ myself.

I've done some interwebbing and saw some stuff about '08-'09 b.t. but those were i think b.t, 2.0's?

any input would be greatly appreciated.