For the last two days, I have not been able to use Firefox to sign and properly use two key platforms for work: Booking.com and Expedia. Both now demand two-factor/step authentication at sign-up which I can live with BUT every time I click a link once signed in that they deem is sensitive (like looking at the details of a particular reservation or accessing their help messaging tools), I am asked to go through the authentication again. For every task. This means, for example, to change a room for a guest I now need to receive three different SMS codes as the platforms somehow stop recognising that I've already logged in. I haven't changed any settings on Expedia, Booking.com or Firefox so any ideas on how to solve this please? Thanks in advance Kevin