Does Not Carry To New Devices

I use several devices, including an iPad Pro and two iPhones. My progress does not carry over to other devices, so I am forced to repeat past lessons. I couldnt find any way to fix this. Lessons just stay locked until I go through them all again. Frustrating.

Otherwise it is a great app.

AppleFanTara about Learn Japanese!! - Hiragana, v1.1.10