If you go into your mumsnet 'settings' (under 'my mumsnet') and sign in if necessary - do you see a little blue tab in the bottom right corner of your screen with a cog and 'Privacy' on it? If so when you click on it, what happens?
I think this should be where you can control cookies etc NOT anything to do with your personal data like email address. But nothing happens when I click on mine, both on a PC and an Android phone (mobile browser version, Firefox).
I asked about this a while ago on site stuff with more info on what' I'm talking about www.mumsnet.com/Talk/site_stuff/3995461-Cant-see-or-update-privacy-settings
but only one person replied to say that the same thing happens for them. LilyMN said it was a software update. I'm just wondering if it's just me, as I have other issues on mobile browser in how I manage my Threads I'm Watching (but it works ok on PC).