Between 23th of february and 20th of march this year there are no activities on intervals.icu. But they are on my strava, which is synched. When manually downloading tcx files and uploading them here I get an error message saying no activities were found.
I just clicked the “Download old data” button in the Strava box in /settings and it looks like your activities are loading.
Ah great I couldn’t find it but they are there now thanks!