12-04-2020, 10:58 PM
Since it's urgent a quick answer: Probably the same issue as was posted before. There's an expiration date.
Re-download the beta apk from the link Mike provided (the same as the first time) and install. You should be able to start it normally after that.
Re-download the beta apk from the link Mike provided (the same as the first time) and install. You should be able to start it normally after that.