
Hi Katelyn. I'm Greg, an installation specialist, 10 years awarded Windows MVP, and Volunteer Moderator, here to help you.
Have you tried another browser? I would have several browsers on your task bar so there's always one that's best for the task. I use Firefox, Edge and Chrome in that order of preference. It's easy to share bookmarks between all of them in their settings under Import Favorites from another Browser. Firefox and Chrome let you sign in to save and/or sync your Favorites on any other device you sign into, and are more reliable than Edge at doing this. Set the preferred browser as Default in Settings > Apps > Default Apps.
Firefox download: https://www.mozilla.org/en-US/firefox/new/
Chrome download: https://www.google.com/chrome/
If that doesn't help then contact the website's Support to get help signing in as this is not something Microsoft can do.
I hope this helps. Feel free to ask back any questions and keep me posted. If you'll wait to rate whether my post resolved your problem, I will keep working with you until it's resolved.