Gfpandora

My horse has negative 2 billions stamina now after I activated that infinite horse stamina option and I can’t exactly keep feeding it until it reach positive. Is there away to fix the horse stamina? Since I can’t use my horse to get to the castle nor get rid of it to tame a new horse. I have tried deleting and installing the app again but it still stayed negative... Please if anyone has the solution to this problem, I want to try exploring more places. @Rook