@Catherine_Lee and and @Dobby_Gee
Please also update your Zwift app to the latest version. If you’re using iOS / Android / Apple TV please make sure that those operating systems are set to allow your apps to auto-update.
If you continue to see this issue after trying the things Mike suggested, we’d like to see the log files from the computer running Zwift. Here’s how to locate your log files and send them in. When you email them to us, please reference this forum thread’s URL.