Repeater on 5G does not work

Hello all!
I have 2 hAP ac lite router. Want to connect one Router to Another via 5Gz to avoid cable stuffs.

Have an issue with the configuring the Repeater on Wlan2 5Gz. At setUp window it says that connection is done, but at Registration tab, there is nothing… therefor can’t go further.

The strange issue that i have also tried with the Wlan1 on 2,4Gz - and there all works well, but bandwidth a quite low((

Maybe some one have some ideas, i would be glad to hear.
RouterOS v6.47.7
Board hAP ac lite

Ok, played a few hours in a line. As it turned out issue was in Frequency. It was Auto and i have set the 5180 and bang! Works like a charm. Now got fast network through the whole flat))