WiFi AP does't work with VLAN tag/ID on second-third AP

Hello everyone!
I have some dificults with configuration.
I have:

  • Mikrotik router (hAp ac lite) - say, MainBouad, all networks should be configured via this router;
  • 2-3 Mikrotik AP - say, Tails.

I need next:

  • on Mikrotik router (hAp ac lite) create a HotSport with all my scripts, required for Hotspot configuration. (This is Done)
  • connect to MainBouad 2-3 or more Tails.
  • on all these “Tails” should be configured two Wifi networks: WorkAP and HotSpotAP
    WorkAP - as usuall secured wi-fi point
    HotSpotAP - it is a hotspot which is configured on MainBouad.

What i’ve tried:

  • on MainBouad i’ve created and configured a Vlan with ID=20 as slave for Ether-4
  • created a DHCP server with pool and addresses for this Vlan
  • on Tail AP, i’ve created tro WiFi AP: WorkAP and HotSpotAP
    The WorkAP works well but HotSpotAP does not work if i Use Vlan Mode: Use tag and VLAN ID: 20

Maybe it is completely wrong, i do not know, have spent a full day, without the luck((

Post full config of both main router and an AP (/export hide-sensitive).

Thank you for a response. Unfortunately, i have reset the routers yesterday, as could not get any result and right now trying to make it from scratch.
Will write here back when(or if) reproduce my previous config.

Thanks for your reaction.
Spend another day, and Vualia, all is done.
Got Main router with Vlan and hotspot bridge and few tails (WiFi AP). On AP are Work and HS WiFi networks. Works really well!