Push Notification OneSignal DOES NOT WORK

Overall the plugin is good. But don’t waste time with Push Notifications integrated with OneSignal. It doesn’t work on iOS (this is already expected), but it doesn’t work on Android either. In other words, it doesn’t work on any smartphone device. Totally useless for an AMP version. I even tried to help with Technical Support, but I didn’t get the solution, only vague answers stating that I should solve the problem with OneSignal. But OneSignal in the summer does not work AMP perfectly. So I have no doubt that the problem is really in this AMP plugin. My solution was to disable Push Notification in the AMP version.