There are several previous questions about this but they are all a few years old or just dont seem to resolve the issue. I have weight data originally from withings, in a csv, which i transformed into this format:
Body
Date,Weight,BMI,Fat
"2025-04-20","86.1","24.4","18.1"
The data is consistent throughout, and where there are missing values this is represented by ""
If I try to import on https://connect.garmin.com/modern/import-data I get the standard error message and its unclear why. Looking at past posts, my format matches them.
The import page itself references "Fitbit® body or activity data (.xls, .xlsx or .csv format).", so I tried emulating this by removing the "body" row, but this makes no difference.
I did think about importing my data into fitbit, then exporting it from fitbit to guarantee the suitable format, but the fitbit website appears to be dead...
