All I get is a white page when clicking the link.

@Tio I am in latest Chrome using laptop with ethernet connection.

Chromium and Chrome are not the same thing. I do have ad blocker plus running and rarely disable it like most people. But this is not the culprit. BitDefender identifies your url as infected and will not display content.

I am curious what part of your website got flagged by BitDefender... and just fyi, a good article listing differences that matter when building websites https://www.howtogeek.com/202825/what%E2%80%99s-the-difference-between-chromium-and-chrome/

Thanks Tio I guess my point is not coming across so I will clarify. False positives occur when a program or webpage performs an action that appears to the antivirus program to be a virus-like activity. While you can report false positives to whichever antivirus program flagged it, you are meanwhile losing potential users you want to reach with your website. This is why if it were me I would investigate why the false positive occurred. It could be action your host is involved in and nothing to do with your site code. If that is the case and the host does not resolve the issue if it were me I would look for another host or host it myself. I don't trust allowing websites that get flagged even though I know there are false positives and I know this is the case for a lot of people - even when the person who owns the site is trustworthy their hosting service may not be due to hackers etc.

All of those websites seem ok. So that means something about tiotrom.com is different in fact I now see the message (instead of a blank page) BitDefender has blocked this page
This website was blocked to prevent a malware from reaching your device. Malware can cause your device to slow down or it can steal your private information.

The only thing I could suggest is to install BitDefender to see if it stores a log file when you visit the website or contact BitDefender folks to ask if they can tell you what they are detecting.