Sharing Limit Quantity on Adbore Reader DC

Hello everyone, 

I'm use to share documents for reviewing to my coworker but I often end up with a "Sharing Impossible" notification, indicating that I exceeded the daily limit. 

Do you know what is the maximum amount of PDF that can be daily shared ?  

Plus, when I try sharing a link I also have trouble with a notification "This file can not be send for reviewing".  

Many Thanks,