Can't connect my Bulb 1SE

Hey guys, i just got my new Bulb 1SE and I tried to connect it, but i can’t get it to work. I flipped the switch 5 times (as told so) and it also started flashing in different colors and turned white (as expect). Now on my device:

  1. Android 13 (Google Pixel 6 Pro): I can find the bulb, and whenever i allow it to connect via the yeelight wifi, the progress goes to 50% but then stops.
  2. iPad Pro (iOS 16): The progress goes to 25% and the bulb starts flickering but the progress doesn’t increase and after maybe 1,5 minute the process gets aborted.

How do I fix that problem?