Problems syncing activity from Forerunner 965

Hi there,

I recently did Alpe d'Huez triathlon and the activity won't sync. I've tried the steps in the other discussions such as switching everything on and off, forgetting the device and then pairing it again and downloading the file from my watch and manually uploading but nothing works. I suspect the file has corrupted somehow, but as I have a Mac rather than a Windows laptop I can't get MS Access on my laptop to try the fit file repairer mentioned on other threads. Can anyone help me?

Thanks

Kas