When you land on a site that won't even load properly, that's already a bad sign. stun.fastscr.cc returns a 502 error and has an invalid SSL certificate, meaning any connection wouldn't be secure. More importantly, there's no sign of who operates the site: no about page, no contact details, and the domain doesn't even show up in WHOIS records.
For a site to be trustworthy, you need to know who's behind it and have a basic level of security. This one has neither. The presence of a security.txt file is technically a good practice, but it doesn't outweigh the fundamental problems. Stun.fastscr.cc reviews won't exist because there's nothing to review – it's not a functioning website. Our advice: don't visit, don't click, and don't enter any personal information if you somehow get through. This is not a site to trust.