Fifth Third said it's the Edge browser. Edge did update over the weekend and I have not been able to login since then. I was able to login in once on an old desktop, but then Edge updated on it and now I can't login on the old desktop anymore. I was able to login in on a 6 year old Galaxy Tab A tablet using Samsung internet, so I do think the problem was Edge, but that Fifth Third should learn to get along with the updated Edge. I don't know how to report this to Microsoft or the bank. Hope someone can help alert them to the source of the problem.