3389109 said:

* The up/down arrows on weight do not show correctly.

This seems fine on mine, which is being reported by the Index S2.

Can you supply a screenshot of what you're seeing?

I have managed to delete multiple guest entries from Garmin Connect but one entry just won’t delete. I’ve deleted it from MyFitnessPal. Can’t think of any other health apps that could affect this. Strange that only one entry can’t be deleted! Any ideas…

Not exactly what I'm looking for, it's not showing max weight but accumulated moved weight per session. In a larger time frame it's grouping multiple sessions. So not really useful to see progression, this could be improved. 

I spent HOURS on my first Index bought from Garmin trying to get it to work:

1. Multiple attempts to get it to work through i-device set-up doing full re-set between attempts. Despite setup-saying it was successful I get the Wrench icon and X in top right…

I spent HOURS on my first Index bought from Garmin trying to get it to work:

1. Multiple attempts to get it to work through i-device set-up doing full re-set between attempts. Despite setup-saying it was successful I get the Wrench icon and X in top right…

I suspect that the 520 is using a much newer version of the Firstbeat libraries for calorie calculation than the 305 so it is likely not a like for like comparison.

What sensors if any did you have paired with both devices as that will make a big difference…