!!! This problem has been fixed after the 0.95 update !!!
After the 0.91 update, my oldest and most advanced colony (made with united earth) has been denying me access, and showing me this message when i try to enter:
I have tried restoring a previous version of the colony, but this hasn't worked.
This hasn't happened with my other, less sophisticated united earth colonies or with any of the insectoid or reptillian colonies that i have.
This bug is present on all of my devices (android phone, ipad and windows laptop).