Dear Erica Tinsley
Thanks for using Microsoft products and posting in the community.
Sorry for your question.
For the situation you described, it may be caused by interference with the Edge browser because the new Outlook is based on the Edge browser. You can try cleaning the IE cache, and the Edge cache.
View and delete your browsing history in Internet Explorer - Microsoft Support
View and delete browser history in Microsoft Edge - Microsoft Support
Disclaimer: Your browser automatically saves temporary internet files to help pages load faster. Clearing this cache will sometimes fix website issues. Please back up all your personal files first, such as Favorites, to ensure you do not lose data.
Alternatively you can also try to delete your account in the new Outlook and re-add your account to the test.
If none of these solutions work, you can also switch back to the classic version of Outlook.
I hope the above information can help you.
Looking forward to your reply.
Best wishes
Clark | Microsoft Community Support Specialist