It seems you have to disable Javascript. There must be many ways to do this. E.g. In Firefox, install pop-up stopper add-on 'Ublock Origin'. Click it and a 'ribbon' descends. At the bottom you will see five pictograms allowing you to disable/enable various items. The one on the right concerns Javascript. Click it to disable. The irony is that I had disabled Javascript to stop the Cookies pop-up here, but you need to enable Javascript in order to Log In - ho ho ho... I hope this helps, Andrew 44