Cannot remove wallpaper

[pgpapas]

Hello, As the subject line suggests, I'm having trouble finding how to remove a backdrop image I've added. (By the way, this is a great launcher - thank you!) Please forgive my naivete, but I'm very new to using an android box on my tv, still very much in the learning stage (truth be told, I don't know a damn thing about these boxes, but I'm hoping to give my $150. CAN/month cable company the boot). That said, I installed your app, and while "experimenting," I noticed the option to use background image, so I gave it a go but unfortunately picked one of far too low resolution. A simple fix would be, of course, to simply select another, but I imagine there surely must be a way to remove, or go back to default, but I simply can't find anything like that in any settings. I tried uninstall and reinstall, but that doesn't do it either. I don't mean to be of trouble, but your assistance would be very much appreciated, as would any possible direction to usage information sources re the android tv box that may help me learn a thing or two (I am computer & coding literate, by the way, but so far its like I'm in a different world with this little damn thing!). Again thank you very much - for the app, and in advance for any help. All the best, - Pete