[Mod Note - moved to more appropriate forum]
iphone SE.
Using Midi Guitar standalone with Syntronik as an AUv3 plugin. Orange Omec as audio interface.
Syntronic loads fine and works for around 10 minutes. Then, suddenly, it stops, and all that's left of it in the 'instrument' tab is a blank white screen with 'Syntronic' written at the top.