Firstly, I’m really sorry to hear about the issue you experienced that wrecked today’s workout Our goal is to make you faster, and issues like that certainly don’t help us achieve our mission.
Now onto the issue at hand. This is actually not something that we have heard of before, so we appreciate you taking the time to report it to us. Since this is not a common issue, most likely, this is is a one-time error caused by some type of miscommunication between the App and Web.
What verison of the Mac and iPhone App are you using? This information can be found in the “Support” Tab of your app’s settings. This information may help me to better understand your issue.
In order to ensure that this never happens again, make sure that any time you make a change to your FTP, that you give the app the appropriate amount of time to sync before starting your workout. If you wish, you can also check that the FTP has updated in your Settings, but like I said, this usually happens seamlessly as long as you have an internet connection.
I am happy to help you troubleshoot this issue further in a Private Message to make sure that any and all persisting issues are sorted out. Again, I’m really sorry for the inconvenience and I’m hoping that you’ll give us the chance to make it right