Redirect and white screen problem

I have my main site at https://slicedwebdesigns.com.au and have two test wordpress installs at https://slicedwebdesigns.com.au/test1 and https://slicedwebdesigns.com.au/test2 but there is a problem getting into my main site. It just displays a blank screen at https://slicedwebdesigns.com.au

When I try to login to https://slicedwebdesigns.com.au/wp-admin it redirects me to https://slicedwebdesigns.com.au/test1/wp-admin

I have since deleted the entire /test1 install as well as removing all .htaccess files from each directory, which I’m not sure if I should have done.

I think the problem was either coming from the bulletproof security plugin installed on the main site (might be unlikely though) or the s2member plugin installed on the /test1 site.
It seems the problems started after installing s2member.

Any thoughts??