Firebase is not working (for me)

Hello, I'm having problems with my firebase, I created a login system and sigin is already inserting the data into the database but when I close the project and reopen it it stops inserting the data into the firebase.
Can anyone help me???


can you share your relevant blocks? and also your firebase data.

whenever I close emolador I go to sign in and firebase no longer works
I would be very grateful if you could help me