Labels have vanished

Help please. I've been working in my new version of Bridge, but suddenly, the tabs/panels on the left-hand side have changed, and I can no longer access the view that shows me the labels & ratings-  i.e. how many files are red, yellow, green etc. This is the only way I can edit my files as I neede to filter them by label, but this is now impossible. I've wasted hours searching all over Bridge but have no idea why this view has vanished nor how to get it back. Please see screenshot - I have a bunch of useless tabs in that panel - metadata, workflow, collections,  export - but nothing showing me the labels. I have ticked 'labels' in View, so surely they should be visible? They were there earlier today, so I don't understand what's happened to them. I would be grateful for any advice as to how to get them back, and also how to make Bridge more stable so it always keeps the same workspace properties all the time! Thanks