When testing for a Splash message it seems that Iridize does not respect the activation URL. When testing in dev environment the message pops up as soon as a person logs in to the dashboard.
Try to log in using a new incognito window/tab.
Maybe you already had this guide running in this browser tab. Because Iridize stores the state of all guides per tab, if the guide already ran in this tab, even if with a different user, Iridize will remember than and retry to launch the guide.
Also, I would recommend to remove the sticky setting because the guide should only appear on this URL and go away if the user navigates to a new page