switch not working when connected to RT AC67 U as mesh

Hello everybody,

I have asked this question on different forums but no luck so far.
Setup:
- main router : GT AX 11100
- 3 mesh nodes (2x RT AC67U and 1x ac 5300)
I have a netgear poe switch for my cameras. When connected to a rt ac67u the cams are not reachable.

Additional (hopefully usefull) info:
- rt ac 67u: shows up in de asus ui of main router and shows clients connected. so CONNECTION OK
- when I connect a nas (wired) to this mesh it shows in dhcp. so WIRED connection on meshnode...

switch not working when connected to RT AC67 U as mesh