I have been blocked from logging onto Facebook as it claims that I have malware and must add a ESET program to scan all my files | Norton Community

I have been blocked from logging onto Facebook account unless I download their Malware scanning software ESET. I have so far refused to download this program and  have 360 and no malware found with repeated up to date scans. I was able to briefly scan my FB page with 360-found nothing- before being blocked again and the 360 was automatically deactivated from watching my FB page.

Any ideas please??