Good morning guys. I have a problem with notifications push on android (any version). In practice, after a while some of my clients' terminals don't receive any more notifications until they clear the app cache (I found this solution after several attempts and tests. It works 100%.). Why after a while is't necessary to empty the cache to receive notifications? Is't a common practice? Is't normal empty the cache every so often to keep the reception system working? thanks a lot to everyone.