Hello.
Maybe this will help somebody :)
Next steps works for me (from factory reset):
1) connect all (two) AP's to LAN, give them IP from DHCP
2) connect to VC
3) configure country - CZ works fine for me; SK works too
4) disconnect ethernet cable from 'MESH point AP'
5) unplug 'MESH point AP' from power (reboot it) and wait to boot
After this steps one AP act as Mesh Portal and second as Mesh Point.
Now you can do some other configuration as ESSID etc.
REMEMBER !!!!
If there is Mesh Portal and Mesh Point working, 5GHz radios will not propagate your ESSID.
Jaroslav