Why can't I play multiplayer?

I made a server using aternos and it for some reason doesn't let me enable multiplayer(It also doesn't let me change to creative or change the game difficulty. Anyone else using aternos.org can help me?

gged on

jk lols

is it someone elses server?

no its mine

in options?

bedrock or java

pe

i made a server and i can change all the things i need to do?

could you send a ss?

i can do it later but not now

ur on the options page?

its because be is  sh....