If you are stuck on the "Lumi" loading page when trying to login, here's a simple fix.
Right-click and select "Inspect".
This will open the developer tools on the right-hand side.
Click the double arrows ">>" on the top-right toolbar and select "Application" from the dropdown menu.
On the Application view, select "Storage", then click "Clear site data".
Click the "x" on the top-right to close dev tools.
Refresh your browser, and you should be logged in successfully.
If this doesn't work, trigger a logout by going to this link: https://auth.lumi.media/account/logout and then login again.
If you are still having problems, please contact support@lumi.media.