FR265s doesn't record sleep data

Is the new watch set as your Primary Wearable Device?

Yes, it is set as primary device. The FR245 is already swtched of. The night before it was still on but for the last night I switched it of. No luck.

Is the sleep data visible directly on the watch, when you enter the Sleep widget?

No, there is no sleep data, no HRV data. HR data is fine. Meanwhile I did a restart (long press light button), so I'll see next night.

I'm also wondering why the altimeter is messed up. After installation it showed -141m... Bremen is 11m... Did a calibration with GPS, 11m. Auto Calibration is activated. After my run over several bridges with elevation I had no changes in altitude and no stairs. Went upstairs in the house two times. Okay, at least 3 stairs (instead of 4). After the restart an hour ago the altimeter shows 55m... I'll see what happens after my afternoon walk.

Still no luck after restart of the watch. No sleep data, no HRV. No I did a factory reset. That one where CIQ stuff and activities are kept. I'll see next night.