Volumio Primo freq crashes when searching Qobuz using Iphone

I have trouble staying connected with my primo using my Iphone. When I close my phone and later activate it again, it frequently happens that I can’t acces the primo. When I close the app or webpage to the primo it often works again. It also happens quite frequently that when I search within Qobuz, the app or webpage (primo.local) doesn’t respond. The primo switches to green light and seems to reboot. This process takes a minute and after reboot I can acces the primo again. Seems like a bug to me. Are there more users experiencing connection issues en reboots on ios connection like me?