If your account status is reported in the account window as "Locked: -1", then briefly shut down the application. This is done by clicking or right clicking on the SpiderOak One icon in your operating system's system tray, menu bar, or notification area, and selecting Quit. Once the application has fully shut down, relaunch it as you would any application. That is done via your operating system's start menu or screen, launchpad, or application launcher.
If you find you are still seeing the Locked -1 code, try Renaming the APPDATA folder for One and Reinstalling an Existing Device to clear any transient problems that could be causing the code to become visible.
If the above does not help, please contact customer support. When you do so, mention the lock code and the email address associated with your account.