You will not be able to upload files if your account is running out of free disk space. The good news is, you can easily check whether you’re running out of disk space via your account’s control panel.
If you’re sure you have not used up your account’s storage space, you can contact our technical support specialists via live chat or ticket. Sometimes, the server’s firewall may block your IP address if it senses too many connections coming from the same place. Our experts will see whether this is the case and will assist you further.