XFileSharing Pro - Help: (connect: No route to host) )

[prouser21]

My server change ip. now im getting emails and when you click download
we get this error.

Error happened when generating Download Link.
Please try again or Contact administrator.
(500 Can't connect to (connect: No route to host) )

The email im getting is this

Error happened while testing server Main:

500 Can't connect to(connect: No route to host)