One click install modules from marketplace not working

[Nicholas28]

This instruction video doesn't seem to match current PS versions.

Now the link is called Module Manager and not Modules and Services as in the video. And in my module manager I can't find the bought modules (I have linked my shop to PS addon store). When I search for the module the search is opened on PS addon website and not within my local modules.

Is there a newer guide that works with PS 1.7.4 ?

This video was included in the PS email I received when I bought the theme.