Open the inspector, reload the page and you'll see:
"Request Blocked
We blocked your request because the IP address you’re using looks suspicious. This issue will usually resolve itself after a short period of time, and you can try your request again. You can also try using a different IP address to see if that resolves the issue.
If you need additional help, you can try one of these support options.
Thank you for the description. I assume they're using a bot management script which is set to block requests if devtools is open. For such websites, opening devtools in a separate window should work.
Some websites will try to throw you into a loop of debugger statements if they detect devtools being opened, which is harder to work around, but it doesn't seem to be the case here.
Disabling javascript breakpoints usually does the trick. Devtools detection is often done by having a `debugger;` statement somewhere and timing of it triggered
A lot of them dynamically generate new anonymous functions to get around this. Last I looked (~1 year ago I think) neither Chrome nor Firefox supported disabling the keyword completely. Do you know if that's changed?
"Request Blocked
We blocked your request because the IP address you’re using looks suspicious. This issue will usually resolve itself after a short period of time, and you can try your request again. You can also try using a different IP address to see if that resolves the issue.
If you need additional help, you can try one of these support options.
Reference Number: #####"