@AliReza_A Have you fully updated the firmware across your routers and switches? Also, if you can share your network topology, that would be great.

@RemyH If the device is still under warranty, you can get replacement antennas through the support email. Please contact the support for your region here.

@BernWood Can you connect the laptop directly to the Bridge AP's ethernet ports to check, rather than through the passive PoE adapter? Alternatively, can you connect to the PoE adapter directly...

@ProSumerTester Is LLDP enabled on your router and EAPs as well? Also, would you be able to provide the firmware version for all devices?

@A_Mansoor How are your VLANs set up? Can you please send a screenshot of the configuration page?

@paul14rs5 No worries, when you get a chance to test, please update with your findings!