I have a omada router ER605, controller OC200, switch TL-SG2218 and couple of EAP 245 v3

I am unable to use continuity or sidecar specifically

1. Side car (use ipad screen as extended screen for my mac)

2. facetime continuity for camera ( use iphone camera for facetime)

When a sidecar is initiated, the ipad shows the inital screen of the mac thereafter keeps disconnecting.

Continuity for facetime will show a black screen when initiated, on the iphone nothing shows up.

I am able to use the above features when i connect the devices with a cable but not wirelessly in this particular network.

I have no issues when ipad, iphone, mac are connected in my other place's ubiquiti setup

side car works when ipad and mac are connected to iphone's hotspot too.

The devices are in all in the same subnet. Airdrop works fine across the 3 devices, so i don't think its a bonjour issue

Has anyone faced a similar issue?