Hi

Advertising block is not working. If I insert simple text, it works and displays the text, but if I insert Html like it's supposed to be shows me this.

Forbidden
You don't have permission to access this resource.

Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request.

Thanks
Hugo

@Hugo
Hosting protection that does not allow to put javascript code into forms.
Solution is to manually add your javascript via FTP to theme files.

So, I have to modify the files and upload them. Can you tell me which files???. Thanks

@Hugo
Depends where you want to place banner.
Those are theme files.
i.e. item.php for listing page, main.php for home page, search.php for search page....

Solved,  I disabled Modsecurity temporarily. Hope this will help anybody else.

Thanks!