i think your first warehouse has to be a certain level before u can build the second n third 

when i did mine we didnt have the option building all at once, 

but im pretty sure the first warehouse has to be a certain level then it will apear 

dgekat said:

Hello,

One of my warehouse unit is missing??? I wanted to built it but couldnt and now I cant find it either (see pictures below)

I disconnect, refresh twice already.

Regards,

Hello, Captain!

I have resolved the issue with your Warehouses. The third one has been stuck under another Warehouse. To solve this issue you need to move your buildings via edit mode until you find the missing one.