Hi Yossi,
Sorry for the delayed response. The scanner checks if all WordPress folders and files match what exist in the official WordPress core repository. If a file has been changed, usually it means your WordPress core installiation has been altered so you see this error. Normally, index.php files shouldn’t be changed. Did you change the file?
Hello,
Yes, we sent you a request. Marking this thread as resolved.
Kind regards,
ThreatPress