Null's Connect doesnt work on my phone

Hi, I write the topic in Null’s clash but it happen with all games that have Null’s Connect (Null’s Brawl, Clash, Royale, Rush and Retro Brawl) when I click on it I have the Null’s Connect logo but there is the loading thing that spin that stay, Ive been waiting 30 minutes it doesnt load. Anyway to fix it ?
Im on a Samsung Galaxy Core Prime with Android 5.1.1

Same .