Sorry to hear about the issues. To address both of your problems:
What version of Bidule are you using? When you say the level meters don’t work, do you mean the analyzer, or the meters in the right side of the plugin? Does the plugin pass audio, it’s just the UI that’s frozen?
Check and see if you have the option to “Use OpenGL” in the info menu in the top right of the plugin. Depending on your graphics card, OpenGL may not be available (or you may have turned it off?). The analyzer is only available in OpenGL mode on Windows, due to performance restrictions.