Bad URL when adding webpage links

[VisualDigital]

I am trying to add affiliate links to my Prestshop 1.6 site.

 

The amazon affiliate links work but when I try to ad Best Buy links it gives me a bad URL error..

 

 

Here is the link

 

http://click.linksynergy.com/fs-bin/click?id=wV*/P49l9h4&offerid=342314.148&type=3&subid=0

 

Its seems the asterik is causing the problem.

 

Is there any way to fix this?

 

 

Thanks