Passolo Translator Edition vs Professional Edition 2015

Hello,

We use Passolo Translator edition 2015 and the client sent us a bundle created in the Professional edition 2015. If I double click on his bundle, I can't open it. But if I open the Translator Passolo 2015 first and then slide the bundle into Passolo, then I can open and view it. However, the Bulgarian translator cannot open the client's bundle. What is the best way to open and translate the client’s bundle? I tried looking for the option mentioned in this link but I cannot find it: http://producthelp.sdl.com/SDL_Passolo_2015/en/html/ExportImport/TranslationBundles/BundleLic.htm.  

Generate licensed translation bundle” but in vain... We cannot find this option.

Thank you in advance for your quick reply.

Kind regards,

Veronika