You might see an Anubis anti-bot Proof-of-Work check to stop automated traffic...
https://johnathankvdj950.wpsuo.com/what-should-i-do-if-reloading-doesn-t-help-and-the-server-seems-overloaded
You might see an Anubis anti-bot Proof-of-Work check to stop automated traffic and keep the site safe. This check runs using JavaScript. If the page doesn’t load or seems stuck, your browser might be blocking scripts