You can go in the browser URL field and type "archive.is/" in front of the URL and press enter after step 2. It'll either redirect you to an existing archive page or lets you create one if one doesn't exist.
For some reason it isn't loading for me, but if you use a search engine that supports bangs in your URL bar (DDG or Kagi) you can prefix the url with !ais and just search that. Same with !wbm or !ia for Wayback Machine