I have to post here as the original thread in the Known issue section was locked.
I had followed the advice to uninstall and then reinstall Zwift three times. Each time after reinstalling, Zwift’s client was able to launch and log in successfully. However, if I closed and relaunched the client, the "Whoops! We hit a roadblock and something went wrong… " message will pop up and force close the client.
I had followed the steps from the Re-installing-Zwift guide each time. But I noticed that whenever I start the client after reinstall, I was not asked to enter my username and password but the client proceed to log me in. Is this normal?