HELP!!! Can't build on cubic chunks server because of vanilla height limit

I'm using Cubic Chunks, Cubic World Gen, and Terra 1 to 1.

However, when I try building in tall places (above the vanilla height limit), it says the height limit for building is 256 blocks!!!!!

This shouldn't happen as cubic chunks makes the maximum world height limit virtually infinite.

Help????????????? How to disable this?????

Also even weirder is that it generates stuff above the vanilla limit fine, just can't place anything?

Help this will ruin my server completely if I can't build on it

GUYS DON'T MAKE THE SAME MISTAKE AS ME, FIXED.

I was changing the max world size, not the height.