WLAN accessibility in client mode (pseudobridge)

Hello,

I have wAP LR8 kit and always had the problem that it was often not reachable as WLAN client. After several updates it did not get better. I have tested several configurations (DHCP mode, static ip, bridge WLAN to LAN…). None of the configurations solved the problem. The following messages always appeared in the logs:

@wlan1: lost connection, no beacons received
@wlan1: failed to connect, on 2412/20/gn(18dBm), received disassoc: sending station leaving (8)
Lora: [UDP] Keepalive timed out
@wlan1 established connection on 2412000, SSID

As an idea, I set the ARP entry from the Internet router permanently in Mikrotik. And since then the problem no longer exists. Does anyone have experience with this problem, or is there another solution?

Network setup:
Vodafone Cable Router (192.168.0.1)
Cisco Switch (clear config)
Zyxel WIFI 7 NWA130BE
Mikrotik wAP LR8 Kit