Doesnt work on iPad, doesnt double up on iPhone

I installed the app on my phone and tried to double up / party up two speakers. Impossible despite the fact that both speakers show as connected under Settings > Bluetooth. I downloaded the app on my iPad. Despite the fact that either speaker individually pairs with my iPad and plays music, the app stays stuck on the "Lets Hook Up" screen and does nothing.

Ken_DBA about UE | BOOM, v5.2