This morning I selected to record my workout as a HIIT activity, as I usually do. Though my Forerunner 265S, at the end of the workout saved it as a Multisport activity and now the recorded activity won't open on the App (crashes when I click on the activity on my phone) or watch ('Data for this activity cannot be loaded').
I didn't even think 'Multisport' was an option with the 265S? I have restarted my watch and I believe I'm up to date with software updates on phone and watch.