As said “Share your test app” takes me to the wrong app, a copy of the current app, staging preview works fine. Saw an old issue about this but can’t understand the answer and how to fix it. The old one is here: Share button not showing the right app
To change the URL of your published web app, go to the Publishing section in the builder and select the Web App tab. There, you’ll see the current URL. You can change the app name after the “/” in the Domain section.
If you’re on a free plan and the option is locked, contact Adalo support through this link: New Bug Form . They can change it for you. That’s the standard way.