The Zwift desktop application utilizes your computer's internal Bluetooth connection (or an external ANT+ or Bluetooth dongle) to connect to your sensors. Due to various possible hardware and software compatibility bugs, it may not always correctly connect to your sensors, including the StagesBike. In order to allow for an interruption free experience, we recommend also downloading and installing the Zwift Companion app as an alternate method of connecting your StagesBike, should you encounter issues pairing directly through your computer.
To connect sensors using Zwift Companion:
For additional help, check out Zwift's article: Using the Zwift Companion App.