I actually tried both things: tried blocking as a Firewall rule and in the User Agent blocking option.
Just a part. As I mentioned, only
OPR. My user agent contains “OPR”.
I was using a Firewall rule to block multiple user-agents with OR expressions, and it wasn’t working. This firewall rule exists more than a week, and I noticed that the user-agent stills accessing my website, as I could see in my site access logs.
For whatever reason the Firewall rule just started working, but I temporarily disabled the firewall rule and added a blocking rule to the “User-Agent blocking” option on the Tools area, and it didn’t block my browser.
Lets me access the site normally.
Blocks me from accessing the website.
I don’t know if the User-Agent blocking tool is broken, or if it requires a complete UA like
TL;DR the firewall rule is working now but the User-Agent blocking tool seems not to work, even with the same user agent.