I can't change Default desktop / theme in Portal 7.5

Hi !!!

I created a Desktop in portal content with a customized theme:

and added in permissions my user and check end-user:

In Master rule collection, I added an "IF User = my_user THEN Portal Desktop = pcd:portal_content/every_user/general/ defaultDesktop", and added in permissions my user and check end-user:

But when I restart my login on the portal, the classic theme is what appears:

My custom theme not appear.

I did the procedure in the video below, and the theme worked, but the client's logo image did not appear:

https://www.youtube.com/watch?v=s0wCwgGxysM

I need the customer's logo to be in the place where the SAP logo is. I created the theme with the client's logo.

Am I still having permission issues? Did I forget any settings?

Can anyone suggest what can be the issue .

Best regards...

José Aguilar.