Ah, I found this blog post.
And since 30 days can go by quickly, you still have a safe fallback. If your trial has expired but you need to demo your app in production, start it with the -Dvaadin.commercialWithBanner parameter. This adds a visible banner stating that the app is running in trial mode, which is ideal for stakeholder reviews, MVPs, and internal demos.
I tried adding -Dvaadin.commercialWithBanner to my VM options in Intellij, but it doesn’t seem to work.
