@123willdelete123 some of the qualifications have a timer attached and will disappear after the timer's counted down I believe, once you open them.
After I passed the starter assessment, I clicked on and did the Core assessment immediately and then had a welcome email a couple of days after that. I can't recall if the Core assessment had a timer, I didn't realise at the time that some did and I did it straight away.
Since then I've had a few further qualifications and tasks filter through. Some simple one-box answers as to whether you have x downloaded or a subscription to y, some onboarding tasks to show you can find your way around the site and then two further 'proper' qualifications.
With those though I nearly messed up. When I had them I opened them both for a look then came out of them, thinking I'd do it later. I luckily went back in an hour later and noticed the countdown that was still going - one of them had 4 hours and the other 10 I think it was and time had kept going since i'd first clicked on them!
It was only luck I realised and I had to bin off my actual job that afternoon to do them both before the timer ran out and then worked until 11pm to catch up on my job 🙈
I'd keep watching in case they post them again for you, you never know... but I've learned never to click on and open something until you have the time to do it right then!