Track handle buttons disabled / non responsive

In the sequencer, none of my track handle buttons respond to touch (record enable, mute, and the plus symbol to rename/delete track). I've tried rebooting/hard reset... no luck.

I just bought phone a few days ago and installed BM. The track handles buttons have not worked since I installed. So..no way to manage these tracks!

Thanks for your help!

iphone 6s plus
ios 9.0
BM 2.5.6