Wyze Band Workout (activity) data missing

in several of the workout data collections my band records only the time and step count. Some Days it records information on heart rate, calculated calories etc and some days nothing. I have submitted several log files over the last 6-8 weeks and even had a chat session with support. During the chat session they said the dev team had to look into it. No answers from Wyze just the automated responses with a case number for each log file submission.

Anyone else have this lack of data collection issue?

Yes. I have seen this problem on my watch, intermittent heart rate and calories. Try pressing the Heart Rate option on the watch before launching the Workout app. This extra step appears to fix this anomaly on my watch.