Asus Router RT-BE88U | VLAN NOT Saving in Asusmerlin - Need Guidance

[IRX]

Hello Folks,

I am experiencing Issue with VLAN Configuration on RT-BE88U (AsusMerlin)

I recently upgraded my network with the Asus RT-BE88U and set up three VLANs for segmentation:

VLAN54 - Main Devices (Wi-Fi)
VLAN55 - TV (Ethernet, LAN2)
VLAN56 - Streaming Box (Ethernet, LAN3)

Steps Taken:
1. Updated to the latest AsusMerlin firmware before configuring
2. Connected devices via Ethernet: TV —> LAN2 & Streaming Box —> LAN3
3. Created VLANs (54, 55, 56) via the Web UI
4. Configured LAN2 & LAN3 as ACCESS mode in VLAN settings

Issue:
Despite assigning VLAN55 to LAN2 (TV) and VLAN56 to LAN3 (Streaming Box), the settings do not save properly. Both LAN2 and LAN3 keeps defaulting to single VLAN (usually VLAN55) instead of separate VLAN specified. Totally Weird

I reset my Router to Factory settings few times and configured everything from scratch but no luck. Any insights on how to resolve this?

Thanks!