I’ve been testing Business App Starter live demo and I found out that in an android phone everything is correct but in an iphone 5 phone it seems that they do not work correctly (lateral menu does not close and the visualization does not come out correct).
We’ve tested with iPhones and they work well. We actually had to fix a few issues there but now it is good. iPhone 5 is however older than what we’ve tested with. A bigger thing is what iOS (and thus browser) you have. I checked that iPhone 5 came out with iOS6, but it supports the most recent version as well, iOS 12.2. Could you check which iOS version you have installed on your device?