Hello J M Tutor,
COAsT has become ‘My11plus’ and it has been upgraded but you will still be able to find all the archived tests:
In ‘My11plus’, click on the ‘View: All Tests | Assigned Tests’ tab – look at‘All Tests’ and then press on the blue band across ‘Search Tests’ . Once in that you will able to see the archived tests button to press on.
I use all of the ones you listed too and I they are still all there 🙂
I hope that helps.