Hi,
I am using Cuety with LPU1 on different iOS devices (iPhone5s, iPad Air, iPad mini, iPad 2)
Both, Cuety and Cuety Remote frequently hang, espacially after resuming the device from standby.
I can reproduce this behaviour on all the devices.
Moreover on the older iPad2 Cuety is very slow and tends to hang during programming.
There seem to be some timing problem.
As a work around I close the apps each time before switching the iOS device to standby.
Not perfect but OK.
I hope my description helps solving the problem.