Updating Easyblog brings down entire site

I am the web designer for Summerlin Builders. I tried using your updater for updating Easyblog and it said the API key was wrong. I logged in, refreshed (created a new API key), then downloaded Easyblog 5.0.31. Intstalled it using file manager in Administrator, Success. Then went to Easyblog and tried completing the installation. Put in the new API key and it continued to say the API key was wrong. Meantime, the entire front end of the site is gone. White screen only.