Noticed when adding screens to my Run activity for my FR955 that when I selected the default Run Dynamics 1/2 to be added, they never were added. When I went to go back and try to add them again, they weren't listed anymore. When I restore defaults to Run activity the option to select Run Dynamics 1/2 come back. Rinse repeat.
IOS Garmin Connect 4.58.22
Watch: Garmin FR955 Solar
Sean