This page just adds the Secret Testnet (holodeck-2) to Keplr, nothing fancy here.
No erorr or success messages will be shown.
This page should only be needed by developers, any web app that works on testnet would add it to Keplr automatically.
If the testnet hasn't already been added, Keplr should popup and ask to add holodeck-2.
If it doesn't, refresh the page or check if you already have "Secret Testnet" at the bottom of Keplr's network list.
If you continue to have issues, restart your browser and check Keplr for "Secret Testnet" again.
Sometimes Keplr won't display newly added chains, restarting the browser usually fixes this.