Issues after software update

Question

Forerunner 970, software 18.29. 
 - After the update, wrist heart rate works normally outside activities and during hiking, but when starting the Running activity the optical HR sensor does not illuminate at all and the HR field remains &ldquo;&mdash;&rdquo;. - Always-On Display no longer stays on during activities despite being enabled. Also I went running anyways and am pretty sure that the pace shown was usually off by +/- 30 sec. Eg it would show me I&rsquo;m running at 5:30 but then effective lap time was 4:49 
 - Running activities also do not sync to Garmin Connect, while steps and other daily data sync normally.

Garmin - CF · Answer

Hi! JasminaWiener I would recommend to restore defaults for the running activity profile since that sounds like the source of your concerns. To do this, press and hold the middle left button > Settings > Activities > Run > Run Settings > Restore Defaults. 
 After that, I would reinstall the software on the watch to address the other concerns. To reinstall the software, you will need to press and hold the middle left button again > Settings > System > About, click the top left button 8 times > Reinstall Software. 
 Please update the thread if you still need assistance and include as much detail on what you are still seeing as a concern!