I have register, very easy and fairly anonymous, email, username and password. Done!
I scanned some files I highly suspected were infected with malware and the result that came back was "infected" so I know the scan tool works to an extent.
By the way, the files I chose to scan were scam wallets "mandatory updates" for a project I follow that I know 100% had not had a wallet update.
The scan tool works as it should!
For any suspicious or suspect file or url, I definitely encourage you to scan prior to opening or visiting.