Mikrotik Macbook does not authorize via wi-fi 5 GHz, what's the problem?

Question

WiFi

I welcome everyone!

I ran into a strange problem, set up Mikrotik Hap ac2, but there are some oddities at 5 GHz, the router is conditionally behind a ZhB wall (but there is a doorway along the router along the wall), the signal is excellent in the line-of-sight zone, the router is configured for this frequency - gain 20 dBm.
With the connection established, it is perfect throughout the apartment, without a hint of signal deterioration.
But it’s worth turning off wi-fi on the Macbook and turning it on while in the room (conditionally through the wall), then the laptop connects for a long time, and then asks for the wifi password, although the network is familiar to it and the password is saved, when you enter the password it still does not connect.

On 2.4 there are no such problems

Answer 1

Try the recommendations from this article https://mikrotik.wiki/wiki/Wi-Fi:Secrets
For SSID, use only uppercase Latin letters, numbers and hyphens (AZ, 0-9, "-"). This is critical for Apple devices. Some devices have a bug in the driver, as a result of which the devices become unstable if the SSID uses small Latin letters and special characters.
Correct name example: VETRIKS-AP
Incorrect name example: Vetriks_AP
Use preamble value both (preamble-mode=both). Otherwise, connection problems may occur. For example, on some Apple devices with chips from Broadcom.