"This domains disk limit has been exceeded!" please help

Are you by any change using zPanel?

Try the following:

If Zpanel, on a VPS, shows a limited number of IP’s available, bandwidth, any limit.

1. Login to Zpanel.
2. Go to “Reseller.”
3. Click “Package Manager.”
4. Edit the Administration Package.
5. Make sure you enable php, cgi.
6. From No.Domains to No.Databases the setting should be -1.
7. For Diskspace and Monthly Bandwidth Quota the setting should be 0.
8. Click “Save”