May I ask if the web browser is the same or different? (for example, using TOR Web browser on a laptop, but not on any other device)
Otherwise, are you using some anti-virus program like BitDefender?, or maybe Opera Web browser? (it has got tiny VPN extension implemented)
Websites, I assume few of them, and none of those are your own, correct?
If you get this error while visiting someone else’s website, I am afraid you cannot do anything. You can try to access it using a VPN or over a TOR, but I do not guarantee because it could also be blocked and restricted.
Obviously the website owner is using Cloudflare and security options available to him to protect his website from secific requests and for specific reasons.
The site can block for any number of reason, that’s up to them and not something this Community nor Cloudflare can do anything about.
Helpful articles about 1020 Access Denied error page can be found below:
If you have a connection at any of the sites giving you the 1020 error, note the Ray ID and ask the site owner to search for it in their Firewall Events Log in the Cloudflare dashboard. It should show them the setting that triggered the block.
I have a web filtering software called Qustodio that was causing this problem. I disabled it and now the websites work. I set it to only block adult websites but it seemed to cause problems with any website that utilizes cloudfare.
Not sure why exactly Qustodio is causing this problem.