Board Thread:Support Requests - Designing Your Wiki/@comment-34797220-20200711122034/@comment-44721338-20200713082217

I think the problem is that the image is too small and you don't repeat it, I don't know the exact size of a full image of a wiki background but to repeat it you have to go to admin dashboard > theme designer > costumize > graphic and tgen check the boxes "tile" and "fix".

If it doesn't work, try messing with the buttons until it does.