It appears someone hacked into my site. I now get some text that pops onto the screen before my site comes up.
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Notice: Use of undefined constant HTTP_USER_AGENT - assumed ‘HTTP_USER_AGENT’ in /home2/rickfromm/apexdataconsulting.com/wp-content/themes/sydney-pro-ii/header.php on line 1
If you goto apexdataconsulting.com you will see this happen.
Also, every now and then it gets completely redirected.
Is there a way to reinstall the theme without losing any data?