We have just updated our app package from 22.214.171.124 to 126.96.36.199 and have found that our existing forms are not using this new version even after re-saving the forms.
Is there something that we need to do to make these existing forms use the new version?
Make sure you've installed the latest version of the desktop editor, you can find it in your Plumsail Account
Also, check the version of the webpart and widget in the browser's dev tools > Sources:
You can also check the Incognito mode in the browser.