GPX from CompeGPS is not recognized

A friend send to me a GPX file. Trying to import it on cycle.travel, I get “No GPX track was found in that file. Please ensure it contains trackpoints.” I just open and export it with Viking and then file was right imported. 
I can email you both files if you want, but here is a diff from the heading.

Feature request: show total ascend in journeys listing

Just a sortable column, as existing By distance.

Thanks a lot. Cycle.travel has incredible features for a product made by a one-person team.