Firebase crashing

Hello! My firebase has been acting kind of weird lately. There are sometimes that the data linked to my app simply stop working. I’m sure it’s not a coding problem, because it was workin this morning and then I came back, and it had stopped, and no one entered my appgyver. Besides, the first time I had this problem, I deleted some collections and then it was solved, but now its weird again. Does somebody know what is the exact problem and how to permanentily solve it?