I mentioned this problem earlier, no respons. I'm aware that Julien may not active anymore due to a lot of producing issues. His device is great but he had a lot of problems during manufacturing and that cost him a lot of money. That's maybe why he stopped the whole Motion GPS thing. But! Since a few months the motion upload either OAO or GPX doesn't show any day track and that's anoying. Also Julien is not responding on my e-mails while he did that before on time. I want my tracks back, who knows how? Is it a GP3S or Motion issue? 

This is a know error, will be fixed with the release of the new website. Sometime change of browser / language can fix it, but in general its caused by the high number of changes at the Google API

https://github.com/djong1/gp3s/issues/277