i think i know what is happening to you. the introduction (battle) is not drawn. you can skip that part until you are knocked down on the island. i hope my comment helped you. (i test the game on a moto e40 and a samsung galaxy j7).
i'm really sorry, i would like to help you but i don't have the knowledge to do it. renpy should work fine on almost any (android) device on the market. it's a very rare case though i've already had some games not running on the j7 (not renpy games but more elavorate visual novels made in unity).
