Sleep patterns gone

[DebussySATX]

Hello - I have a Flex 2 (8 years and going strong) and this AM I awoke to sleep without any sleep patterns (awake, restless, etc.). My Flex 2 doesn’t track sleep with any other detail, but now I just have bedtime, wake up, and a basic calculation between those two times. My sleep patterns for all prior days are also gone. 

What gives?

 

[lisashops123]

I’m having the same issue but with a Flex (keeping it out of the landfill until it dies!).