Update: As of march buf from february persists, additionally I can't contact in app support. Button just does nothing. Update: Recently (Feb2022) all app shortcuts stopped working. App lets you pin any page to desktop (create shortcut), the don't work any more. My phone is couple years old (OP 5T), app work's snappy, no slowdowns. I don't have to use any workarounds, neither should any newer phone, but if you eperience slowdowns try dividing your pages into couple smaller subpages.