if you check the "whois" of render-state.to you'll see the registar email is:
d83aed42f6274e80bd4f24eea9f8dade [dot] protect [at] withheldforprivacy [dot] com
while this looks like a fake email, seems that withheldforprivacy [dot] com is a company that allows to mask your email. IDK if sending an email to this address will reach to the email of the owner of render-state.to, but you are free to try 🙂