Why can't I break blocks in Minecraft: Education edition?

I've been playing Minecraft (Education edition) for a while and I'm not able to break blocks. I'm in creative mode and I am not holding a sword. I've left clicked so many times!


Solution 1:

I assume you used it at school, your teacher probably placed deny blocks or you didn't had worldbuilder permission

Solution 2:

If this is a world that you are an operator on then just use the command /wb for yourself. If you want to unlock the world for everyone, use /immutableworld false. If there are deny blocks involved then the /immutableworld command won't work.