Hi DAVETHEPHOTO,
I would like to confirm if the issue occurs on other computer. I think the issue may be caused by web browser cookies. I suggest you clear IE cache or try to edit the website with other browser. In addition, please run the Set up and configure your Office desktop apps at https://portal.microsoftonline.com/download/default.aspx to check your PC for required updates and configure the machine and browser to work with Office 365.
For your reference:
How to reset Internet Explorer settings
Thanks,
Johnny Zhang