Issue with EMP-add excel installation

Hi Experts

Here with one of my client have installed BPC 10.1 and EMP addin 4.0 but the issue is, whenever i try open the EPM-Addin through BPC it not opening, but when i opened Normal excel file its showing EMP And DM Tab.

When i click on this install EPM Add-IN then

Its redirecting to this link sap/bw/cs/webupdates/latest

any kind of help will be appreciated

thanks