Sport tracker import GPX, TCX not working

importing routes from gpx or tcx files stopped working in my app. Few month ago everything works fine. Now i select gpx file but then progress bar is still on 0 and there is no action.
Anybody has same problem?
Version of app: 3.3.4

hi. Please mail me that file at

My mistake. During exporting and sharing file from Caynax to Google Drive, the extension of file was automatically renamed from .gpx or .tcx to .txt. Then import did not work. After changing extension, import works fine.