Jester_411 said:

Roy2040 said:

Why cant I build the new walls,,, I have 3 of them, but nowhere can I find a way to build them

you have to build the portals and then upgrade them to level 5 for the newer walls

This is correct. They consume a lot of power and require upgraded Portals to equip them.

(There isn't an upgrade process for the traps themselves, you just need to get the print and equip it)