Why I received "over quota" message or email?

goodmorning from greece, i recieve this mesage why?

You received that message because you reached the submission limit for your account for the month of July. Please note that limits are reset on each first day of the month. Since today is August 01, 2019 (first day of August) your submission counter has been reset. Therefore, your account is not disabled and you can use your forms normally again.

To know more about your account current usage and limits, please refer to this guide: Understanding-Your-Account-Usage-and-Limits

I also cleared your form caches to ensure all of your forms will not show "over quota" message. 

Thank you!