It looks like you’ve run into a Cloudflare block, which helps protect websites...

https://mike-wiki.win/index.php/Can_Too_Many_Tabs_or_Background_Refreshes_Trigger_Cloudflare_Blocks%3F

It looks like you’ve run into a Cloudflare block, which helps protect websites from harmful traffic. Don’t worry! First, try clearing your browser cookies and refreshing the page. If that doesn’t work, try using a different browser or device