Not Accessing to make rev up to user creo version means (7.0 to 9.0)

I am using Creo Schematics Release 7.0 and Datecode7.0.0.0

One of our customer ILENSYS TECHNOLOGIES PVT.LTD (#606613) is having Creo Schematics recently purchased ,they are having Creo Software Version 9-0-2-0, when i am going to rev up the version 7.0 to latest version ,it showing the popup error like (error if you want perform this action, please Log a Case),