This is currently a bug that CIP is aware of and looking into.
"Hey Hive is not working correctly anymore, it has been on stage 3 in Estela like 2-3 days, Ladybugs are running at hive surface and guide npcs are telling that hive is on 3rd stage. BUT when you are trying to enter west tower (stage 3 tower/basement) whole tower is blocked off. Also noticed on forums that this is happening on different worlds also."
Response by Skerio:
"Thanks for the reports, we are aware of these issues and we are looking into them."