CAP ac: quick setup as Home AP Dual

Hello,
I managed once to get this Setup working. Later I had to reset the router (5s reset button while booting). And now I can’t get to work the AP mode.
Router OS is 6.41.4. Router is connected via Eth1 to my LAN. Configuring from a PC in the LAN.
Procedure:
Quick Set => “Home AP Dual” (from originally “WISP AP”)
Country => “Germany”
Router obtains IP 172.24.1.37 correctly from the DHCP Server in the LAN
Local Network / IP Adress: 172.24.2.1
DHCP Server On
DHCP Server Range: 172.24.2.10
Then I Click Ok, and after a few seconds Winbox Closes, and the CAP ac ist shown with an IP 0.0.0.0, no more connection possible from the PC until i reset the router.
Any help appreciated
TIA
Michael

you can still access it by clicking on the MAC address in winbox

Thank You,

I tried, but this did’t work either (PC connected via Switch to eth1).

Ether1 is firewalled. Connecting to the device is only possible via Ether2 or WiFi

Ether1 is normally used for the ISP side (QuickSet assumes that).

Thank You very much,

now I got the AP working as expected.

Michael