interesting, I would assume you’re running on a new version of android.
I don’t have a fire tablet, but I do use an android phone. I go to settings>notifications and can see a list of every application that’s trying to send me notfications. I can then go thru each one and set as allow or not, and even if I want it to be a push notification or not.
Try checking there to see if blink is there.
Another good step is to delete the application, and reinstall it. that sometimes fixes common issues.