A purchased plugin from the marketplace crashes UE5 when calling some functions

Unfortunately, the plugin does not take the Url anywhere and does not output it anywhere.
It looks like the Url is somewhere inside the plugin library.
We can all set the path to the collection by entering the name, as in the screenshot, but this does not affect anything.
The plugin also requires google-services.json, it loads and works perfectly, as evidenced by working authentication and uploading and writing to cloud storage.
There is no firebase_url field in the json itself and the file does not change while the functions are running.
The most interesting thing is that access to the database was possible after installing the plugin, but after about two days something went wrong, and the ready-made and tested BP stopped working