Just tried going to their site & I can’t use it unless I disable content blockers
pic.twitter.com/5OEqR1gB7V
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
Can confirm it’s @purify_app blocking styling here for some reasonpic.twitter.com/NklHPNWEmZ
Oh, it might be @purify_app that’s blocking something here 
That’s what I use, as well as @1BlockerApp
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.