Android notifications stop sending suddenly

Please provide the following:

  1. SDK Version: 40
  2. Platforms(Android/iOS/web/all): Android
  3. Add the appropriate “Tag” based on what Expo library you have a question on.

So i set up the notifications as the expo documentation provides, create the project on firebase, and everything… the notifications were working just fine, i even handle all the errors correctly as the expo-server-sdk-node explain us to do, and the notifications were working just fine. When was by this morning they stop working, but the status that I receive is an OK witch means it was sent, with no errors. I checked the docs and saw that could be the priority, but I changed it to high, and did not work. I don’t know more about what to do, and what could be the error because it was working just fine. There is any amount of quantity I can send? because I assume that I use a little too much on my testings