Minecraft worlds not creating

Minecraft worlds are not creating for some reason. I'm playing on an android 6.0 and when I play it on 1.16.210.57 I press create it lags for like 2 seconds and then it does nothing. I press create again nothing. All I did was enable caves and cliffs and creation of custom biomes and it does nothing but the screenshots of the beta look amazing and thank you. Have a nice day