How to Solve VVDI MB Tool Communication with Server Failed Error

VVDI MB Tool software and firmware both support update online.Recently,we received feedback that when tried to use VVDI MB Tool,it got error "Communication with Server Failed !(3)",and VVDI Benz software and firmware is already the newest version,how can solve the problem?
How to Solve VVDI MB BGA Tool Communication with Server Failed Error
Here is the error pics:

Or you may also get error like following this one:

Please do not worry. VVDI MB Tool Server update which happened 11:00 PM China time, server was updated successfully all OK.Please try later time.Thanks.
If tried later time still not OK,please contact us online:Email: sales@xhorsevvdi.com Skype: xhorsevvdi.com