7-hour HR data gap

Hey everyone,

Has anyone experienced a long period of completely missing HR data on WHOOP?

Today my WHOOP stopped recording HR data from approximately 7:00 AM to 2:00 PM, even though I was wearing it the entire time.

During that window I completed two workouts, both recorded normally on my Garmin:

• 42-minute run starting at 8:19 AM
• 26-minute strength workout starting at 9:33 AM

WHOOP is now fully synced and recording normally again, but the entire HR window is still blank. I manually added the workouts, but obviously the HR data, Strain and Day Strain can’t be reconstructed.

I’ve already opened a support case with WHOOP, but I’m curious if anyone here has experienced something similar — especially such a long continuous gap — and whether you figured out what caused it or if it happened again.

Thanks!