Question about modtools and building with furniture [phoenix 3.11]

I've a Phoenix 3.11 emulator that you already read.
All of my commands works, but if I give a rank the modtools (acc_supporttool in permissions_ranks) the users with that rank are unable to enter the hotel.
And when people builds stuff they builded stuff will collapse when they are leaving there room and re-enter it.
How to solve this 2 problems?

Thanks in advanced!

Downgrade to Phoenix 3.8.1 , Bro you get errors with this sometimes.. heres a link. MediaFire - Online Space for your documents, photos, videos, and music.

What you mean with "furniture collapse"
Screens please since it makes it a lot easier for us.