Apple Remote Desktop "Verify failed"

I was stupid enough to buy Remote Desktop. I keep getting "Verify failed", I tried uppercase, lowercase. I tried the password I use to log in on the machine. I tried the password that I had set for remote desktop and so on. Does apple even still care at this point? Does someone know how to Verify? https://preview.redd.it/f7tkxzsadqie1.png?width=942&format=png&auto=webp&s=dfe2b1558da23b126c1187950f0c8aab592ee2e0