Synching issue is known, but as far as I remember @Tracy mentioned to open an email conversation to the tech team in these cases, to have a proper communication line.
Weather info: True, I am experiencing the same issue, did not have that before. Even by changing the DZ (forcing the Dekunu to update weather information) it does not fix it. I have the same screen as you have.
Battery: We all wait for an update to fix it. Should be close to come.
Plane mode in the car happened to a couple of us already. Known issue. Workaround: Switch it off in the car, drive slower, …