QuickBlox storage limitation

I would like to use QuickBlox service in my application. Users can send images/audios/videos to the dialog. QuickBlox supports it, but I can't find more information about limitations

1. What is the storage size for files?
2. How long files can store there?
3. What will happen with if storage is full?

• storage is unlimited (you are subject to fair usage)
• no expiration date for files
• max file size is 100 mb per one file