hap ac2 do not see my AP in 5GHz band

RouterOS Wireless Networking
1

Hello,
I have WiFi on Ubiquiti AP Pro (one SSID on 2.4 and 5GHz).
Any device work without problem on both band.
But Mikrotik hap ac2 (station mode) do not see my SSID on 5 GHz band.
Why?

2

Did you set the correct country/region on both devices? Country/region comes with the allowed channels/frequencies. No_country_set uses the FCC frequencies only !
Also selecting any/outdoor/indoor as “installation” is very important, as it will use a subset of the channels if not set to “any”.

If DFS channels are used, then startup is delayed for 1 full minute, if the DFS weather channels (120-124-128) are used the delay is 10 full minutes with every start or change !