Amazon Fire tablet and Ring doorbell

We recently purchased an Amazon Fire tablet to use with our Ring doorbell. We were able to enable announcements through Alexa on the tablet to notify us with any motion or when the doorbell was pressed. It was working perfectly. In the last couple of weeks though, we have not been able to hear any announcements from the tablet for either motion or a doorbell press. If anybody has any solutions to help us get Ring notifications, they would be greatly appreciated. Help!