I can't use my realm! When I join i can't break blocks and few seconds later it kicks me out.

Down there im putting crash report and screenshot, of what happens whence im being kicked out. (its my own realm i bought it today and im really disappointed that i can't play. My friend has exacly same thing when he joins, few seconds on server, blocks are not being dropped, and he's being kicked out) Please help me, I don't want my money to just go because my real is not working.

PS. Im from Poland, so sorry for my english, Im not fluent speaker.