Issues with my Brawl Stars recreation on my Samsung S8+ pill

Hi there, this not often occurs, however when it does it’s annoying, I enter the app and it appears advantageous till I press play and it offers me a black display and takes me to the lock display, does anybody know why it does that? Then I’m going again in and the sport continues and I play usually, however I don't prefer it when it does that 🙁