and how do you do that?
You use it with Telegram. If you don't have it yet, install the app, open the bot link with it and click start. Then it's just a matter of pressing one of the two buttons for BTC or ETH that appear below the message entry field. If the buttons don't appear below (on my desktop app it's sometimes the case) then just type whatever gibberish into the field and you should see the buttons again.