From your mediainfo:
addedAt="2404195876"
This is a UNIX epoch date and it translates to Fri, 09 Mar 2046 08:11:16 GMT
Your server took a time travel and added the item in the future.
Make always sure that your Syno has correct date and time.
Enable the ntp client, Give it plenty of time after bootup to actually perform the time sync.
Your issue should be resolved with a Plex dance of the affected item,
