Sorry, I am not quite clear - you’re home/office IP gets blocked while accessing a remote Xibo CMS installation? Or you have a local CMS installation running which is exposed through your IP to the internet?
Well there are some SQLi commands left in 1.7.6 (not many but some). I couldn’t tell you specifically what is triggering that alert, or indeed why that alert is being triggered for Xibo (we do have some old CVE reports, all of which are patched fixed in 1.6 and higher).
It would be a good idea to tidy up those last MySQLi usages - so i’ve created an issue for that purpose.