So did I! It was pretty tight.
I think you’d have to downgrade for it to work, not the other way around. Or try an alternate plugin to see if that works.
If you DO try to see if this one works, what I did was download the zip file it generates, unpack it. Copy the sql and dump it into your phpmyadmin, and just copy over the wp-content folder to your wp. It wasn’t as good as wp clone did before but close nuff.
Doesn’t work. 5 stars was from it having worked in the past. Tried on several sites.
Tried this, didn’t work for me unfortunately.