Outlook 2016 Seeing configuration coding when changing inboxes

I just bought a new Lenovo Thinkpad Yoga 14, and Office 2016 which includes Outlook 2016.

I've have to different email accounts added. When I click on one or the other, a page flashes (see the attached pic). I hope you can see the picture through the link.

I appreciate any input.

Thanks, Kathy Henter image description here