@SteveVrolijk 

In standalone mode, the switch cannot be configured with a default gateway so it has no idea how to send its own traffic, or any traffic that it routes out to other vlans.  A direct connection will work if you are on that vlan, but it wont cross to another vlan

If you want to access its GUI on any switch interface from any vlan, you need to add a static route on it

0.0.0.0 / 0.0.0.0 > whatever your management vlan gateway IP is

  @GRL 

Thanks for your feedback - apparantly when I connected my pc directly to the switch instead of connected via wifi in the same vlan it worked.

Afterwards disconnect the cable and back on the wifi it work fine now.

Now I want to connect the Omada controller - put it in the same vlan 30 on the switch (before it was in vlan 1). It receives an IP address from my firewall however I can't ping the device, or have access anymore. Tried already to follow the steps to reset it, but without success.