New vsn doesnt work

The old version was pretty good, although poor coverage of products in Canada as noted by others. But I foolishly upgraded. The new version has never worked for me. The scanner window is empty, the Done button does nothing and sometimes the whole app just dies. I check back here periodically hoping theyve fixed it, as I really believe in the concept. Is there any way to downgrade an app?

NotJason about GoodGuide, v4.0.4