Can I test GrowSurf on a URL that is different than the one(s) I entered for my campaign?

Yes, you can whitelist specific URLs, which will allow GrowSurf to work on those whitelisted URLs. You can configure whitelisted URLs for your campaign in the Installation step of the Campaign Editor.

If you install GrowSurf on a URL that is not whitelisted in your campaign, access will be restricted and the GrowSurf floating button will not display (if enabled), and any GrowSurf code on the webpage will not execute.

Whitelisting URLs is useful for when you are testing your campaign on a local/testing/staging development environment.