I can't ping to pc in the same network, in the same Ruijie AP

Hi,
PC A cannot ping to PC B, in the same network, in the same Ruijie AP.
But, it can ping/communicate if the PC A connected to different Ruijie AP with the same network.
Topology:
PC A -> Ruijie AP -> Forti -> Ruijie AP -> PC B
PC A : 10.10.4.6
PC B : 10.10.4.4
Ruijie AP : 10.10.3.0/24
Forti : 10.10.1.1/24
There are no switches in between. What might be the problem ?
Please help.

Regards,
itwell

Dear itwell,

May I please know the AP model? Could you please check whether user isolation has been enabled on the AP?
You may refer to this post for more details on user isolation: https://community.ruijienetworks.com/forum.php?mod=viewthread&tid=1863&extra=page%3D1

Best regards,
Jayden

GTAC-Jayden replied at 2023-4-13 09:47
Dear itwell,

May I please know the AP model? Could you please check whether user isolation has been ...

Hi Jayden,
Yes, it works! I've disabled the user isolation.
Thank you so much!
Regard,
itwell