I reviewed a list of similar reported issues but didn't find one, tim-haw.
It's possible that this is a browser-related issue. We can try a few basic troubleshooting steps to fix this.
Let's try logging in using a private window for it won't save any data history. If it works, go back to your main browser and clear your browser's cache. This is to start your browser fresh. Also you can try using other browser and see if you'll still get the same result. There are instances that the browser being used is not working.
Please leave a comment below if you have additional questions. I'm always ready to help.