Issues with Govee Local Light Integration

Dear homeassistians,

i have an Issue with my Govee Local light integration.

I already set up everything and then installed a firewall to my home network.
This Firewall is also my WiFi Router (SG 105w from Sophos with PFsense installed).

Now i had to reconfigure some things and one thing was my govee led strip.

Now i cant get the strip back to home assistant because the local light integration tells me “Already configured. Only possible to configure it once.”

But i cant find S**** in my integration.

Also have Govee2MQTT but i cant add this device, i dont know why.

Can anyone help?