You should have your own link to sign in. It was sent to you by email. For most schools it looks something like https://yourschool.wise.live, though some schools use their own custom web address instead, like https://learn.yourschool.com.
Either way, always use the exact link from your email. Don't go searching online and try to sign in from there, that won't work. If you can't find your link, ask your tutor or school for it.
Tip: Once you've signed in, save the link so it's easy to find next time.