SplitLeads automatically distributes visitors between your Pages within a Campaign.

If you test your Public URL and get the same Page every time, that is because Split Leads will never show different Pages to the same individual visitor.

To test both Pages, hit your Public URL after clearing your cookies, by using a different browser, or by using a new private / incognito window each time.

If this doesn't work, check that the Traffic Ratio dial set in your Campaign is even between the Pages and is not temporarily blocking one of them.