I think I got everything to work again. For anyone who tries to uninstall and reinstall psychopy without traces of previous settings, windows has a hidden file called appdata in the C: user drive with a psychopy file in the roaming folder (Appdata>Roaming>pschopy3). Once I deleted it and reinstalled psychopy, all previously logged in usernames for pavlovia disappear. When I created a new project, exported the html and synced a second time, everything seemed to work.