Security message regarding frames

We installed WordPress and Flaton Pro on https://www.balanceboard.be and everything worked perfect. We added another domain name, hyperboard.be which redirects to balanceboard.be, but if we activate the option to use the url hyperboard.be, we get the following message: “To help protect the security of information you enter into this website, the publisher of this content does not allow it to be displayed in a frame.”
The workaround at the moment is to deactivate the option to use the url hyperboard.be, but if a user enters the site while using the hyperboard url, we want it to stay hyperboard.be.
The issue seems to be that the template uses frames instead of iframes. Can you provide a solution, or do we need to use another theme?

Thanks in advance!