We need to isolate the physical port trunk from the APs up to the Balance One core. Direct connect the AP to the Balance One Core is the good test. From your configuration, make sure Balance One LAN port that connected to the AP is configured as “Trunk”
Your Balance One should have the following VLANs:
- Default VLAN -Untagged - Staff
- Guest VLAN - VLAN1
- Balance One core LAN Port connect to AP must configured as “Trunk”
B1 (Port 8)<–VLAN Trunk–> AP <— Client device connect to SSID: Guest VLAN
Would you able to refer to the following forum post for the sample setup: