Wildcraft pls fix this, I've tried so hard to fix this but it isn't working

this game and music aren't made by me and entirely made by Turbo Rocket Games, the game is called WildCraft by Turbo Rocket Games so if you dont know what im trying to say, im trying to say that my old pet that is lv 84 is a cat, and my new pet supposed to be lv 1, it is lv 84 instead, and the stats are the same. "just lv your pet up" even tho im lv it up, it still won't go away