If you are in the Alpha or Beta channel and hoping to move back to the Stable channel, you can do just that.
1. Go to Options (lower left) > Settings > General > Support and Updates > Click Stable on the right-hand side and accept any changes.
2. Download a fresh copy of Shift from https://tryshift.com/.
3. Launch Shift and log in with your Primary Shift Account.
Congratulations! 🤩 You are back on the Stable channel.