Your competent attorney will probably, after they get done with the facepalming about you bluffing and getting called on it, tell you that enforcing a judgement

Your competent attorney will probably, after they get done with the facepalming about you bluffing and getting called on it, tell you that enforcing a judgement internationally will cost you six figures. DMCA requests are cheaper, if there is something on his site which is definitely your property. Find 1+ vendors who are necessary to keep the site on the Internet and which operate in jurisdictions where IP is customarily granted lots of respect by courts; send them DMCA takedown notices. I wouldn't spend more than 20 minutes on this. I feel for you; it sucks to have one's work ripped off. This is, unfortunately, basically built in to the model with downloadable software. It is unlikely that devoting huge amounts of your time and attention to this will be more beneficial for your business than devoting huge amounts of your time and attention to selling more software. If it's more an urge to get-back-to-not-being-violated, I very much understand the impulse (as someone who sold downloadable software and had many permutations of this happen), but there is almost certainly another area of life or the world which would be more rewarded by your attention than this.