So, my wiki right now doesn't have a background (I didn't make one) so you might wonder why I'm making this post. Well here's the thing. So I once make another wiki, and I made a background for the wiki. But I noticed that it wasn't working. Upon closer inspection I realized that it actually was appearing, but only for a split second. Finally I realized that as soon as the ads on the top loaded, the background disappeared, and that was why the background wouldn't work, and that is why I haven't made a background for my current wiki. So could someone tell me why this is happening and how to fix it? Thanks.
If I am understanding you correctly, you have two wikis. One has a background but it isn't working and the other doesn't have a background yet. You have me a link one of your wikis. Is the wiki you gave me a link to one of those two wikis? If so, which one is it? When I visit the wiki you linked to, the background image seems to be working just fine.