What I figured out is that the Weather Service is offline every few hours. In the beginning I thought is was every 2 days. I have checked more times and the result was every few hours. It is still not stable. Some days no issues and out of the blue, offline. The wifi connection is good but maybe the amount of time when checking for an update for the weather, the time is not enough. I thought the checking time is 1 sec. This could be a bit shot and causes the that the weather service is offline.