@asbstn @Riley_S It is exactly as stated out. My RE550 has the newest firmware version available for hardware V1. So therefore it is an issue of the RE550 not my setup. That's why I was asking if...

@Riley_S RE550 V1 I have the same problem and my device (IoT device) cannot set a static IP-address. Therefore I would need to reserve the adress using DHCP of router. Unfortunately thats not...