Dynamic headers in Multisite installation help

Hi,

I am trying to use dynamic header plugin on my wordpress multisite, and it worked perfect for my main site ( https://www.truebetmedia.com) but it does not work on the other languaje sites installed in subdirectories (www.truebetmedia.com/sp) inside my main site for example.

In the /sp site (spanish version of the multisite) , In the dashboard, I can go to pages and select the image on the pluggin but when I upload the page it goes back to nothing, and I do not know how to solve it.

I am using theme weaver 2pro just in case this helps.

Thank you in advance if you can help me,

Richard.