Trying to run a search from the "Search Games by Title or Author" search box gives an error:
QuoteError 403
We're sorry, but we could not fulfill your request for /site/games/namesearch/ on this server.
You do not have permission to access this server. Before trying again, close your browser, run anti-virus and anti-spyware software and remove any viruses and spyware from your computer.
Your technical support key is: 50d4-4e91-b40c-8ddc
You can use this key to fix this problem yourself.
If you are unable to fix the problem yourself, please contact the WEBMA5TER and be sure to provide the technical support key shown above.
I always get that, I've given up on using the search box.
But I think you can try and clean the cookies and restart browser. Might work.
If it's like me using the wiki, I'm told it doesn't like certain browsers like Firefox. I haven't put it into practice, but see if it works with your default browser, I'm guessing you don't normally use!