Problems with the Mikrotik router, does not find the base station?

Question

WiFi

In the WinBox program, the Mikrotik sxt SHPnD router does not find an access point. Well, that is, 500 meters from me there is an access point that distributes the Internet throughout the locality, my antenna connected to the router is directed directly at it. The WinBox software seems to be configured correctly, because sometimes I find other base stations that are much further away, this can be understood by the signal strength in the range of -80-90db.
The base station, which is located 500 meters from me, works correctly, since people use the Internet without problems. I have a poppy address for this BS. What could be the problem? What can you advise to do?