Just for others who use Chrome and can't login due to issues (even login just redirects to home page)
1) Open Redcafe on Chrome
2) Click the 'i' (i with a circle) in the address bar. In the latest Chrome versions, this is located at the start of address before, just before the 'www' part of the address
3) On clicking the i, you get loads of information about the site, like connection details, cookies and permissions. In the cookies section, there would be a link which says the number of cookies redcafe has planted in your computer. For me, it is 7, for others, it may be higher/lower. Click that link
4) You would see Cookies grouped by URL. Click on each of the URL/folder and click Remove
5) Try logging in and it should work