Popular Routes
We'll do some further investigations on different platforms and report back. It would be worth you contacting Wahoo though, as the problem you're having is importing to their app rather than exporting from ours.
We raised this issue with Wahoo, but it will probably help if others raise a support ticket with Wahoo too. GPX imports seem to work OK on the Android version of the Wahoo app but FIT imports currently fail on both Android and iPhone with the latest versions of the app and firmware.
We have received the following feedback from Wahoo regarding problems importing FIT files to the ELEMNT app:
"The ability to import .fit files into the Android version of the ELEMNT app is not yet operational. It's something that we recently introduced unofficially into the iOS ELEMNT app, but are yet to do so for the Android app."
In the light of this information we have modified our How-To Guide for Downloading Routes to Wahoo Devices to recommend using the GPX format for now, as this format is supported on both the iOS and Android version of the ELMNT app.