3 have changed their website and now I can't find the page where you can top up your mobile dongle.

It keeps saying 'Page Not Found'.

Anyone else having this problem or has found the page?

Is this what you're looking for?

https://my3.three.co.uk/mylogin//log...nt%2Findex.jsp

I'm still getting a 404 error on that page.

It's working fine for me. Have you tried clearing out your browser's cookies and temporary files?

Yes I've ran CCleaner and Firefox's clear history.

I can't think what else there is to clean.

Edit: A restart did the job.

Thanks for your help.