CPE expirated

I am also seeing that CPE gets expired after 24 hours. Is this normal ?

I also see this.  Is this a problem with the Sony chipset?  On devices with EPO (not CPE) I regularly got EPO validity of 6 days through Garmin Express on my laptop.

Yes, I noticed this behavior too.

The only way I can get it current is connect to USB then delete the CPE file the use Garmin Express to sync. Garmin Connect app on cell phone never worked.

I thought the same too but try keeping the phone connected to Watch for a little longer or hit the Sync button multiple times. That worked to get the CPE in current state. But it expires within 24 hrs. I am ignoring it because no issues with GPS as such.