Weird thing with my Beats...

Hello,

Somehow my Beats aren't connecting to my iPhone SE (3rd Gen). I've tried Apple Support but it didn't work. I don't wanna repair it because it's too expensive. I've tried repairing but still, no. I don't know what else to do. Plz help!! (BTW they will connect if I manually connect but they won't show the connect button when retrying to repair)