I have the same problem, but the problem is a little different depending on the hardware, browser and OS level. All are running app version 2.7.0
1. When using it on a PC running Firefox (91.0.2 (64-bit)), I can duplicate the operation as described previously by j.hoffmann.
When using a PC running Chrome (92.0.4515.159) everything works properly.
2. When using it from an older iPad running iOS 10x the Save bar does appear and works correctly. On this platform the app resizes properly using pinch zoom and remains at whatever zoom level you want.
3. When using it from a new iPad running iOS 14x the Save bar does appear and works correctly. On this platform however, the app does not resize properly using pinch zoom. If you can get it to resize at all after many attempts, it bounces back to the default size.
I love your onboarding emails BTW, they are very helpful and it shows a high level of care and support. Thanks ??