Missing or invalid site address.

Hi there!

I have exactly the same problem as this guy, except im adding a new domain – https://premium.wpmudev.org/forums/topic/domain-mapping-error-missing-or-invalid-site-address

I have set everything (at least i think so) like its described in that topic and here – https://premium.wpmudev.org/blog/how-to-build-a-wordpress-multisite-network-with-multiple-domains/

I was going to use only for a new domains, not for subdomains or subfolders.

I have enabled support access