The registration company used with MarketWarrior 4 and 5 is a European company that had its servers in Ukraine. The recent war hype pushing the idea of a war between Russia and Ukraine has caused the registration company to shut down their servers in Ukraine. MarketWarrior 4 and 5 can no longer communicate with the registration servers and will eventually stop working. There is no easy or quick solution to this problem. We can not swap in a different registration system into the older versions of the MarketWarrior software. When we have any update about this issue we will post a notice here.