Addidng an object

I have 2 buildings in each I have 4 apartments, total in 2 buildings 8 apartments. I manage to introduce into my booking account 2 apartments from one building. One is described as close- I dont know why, one not. 

When Im trying to add new apartments system redirects me to "zamów strone obiektu" age (i use in polish)/ Im not able to add new apartment trough this redirected page.

kind regards,