If you have trouble loading the Uniswap website, first check that you are visiting the right URL: https://app.uniswap.org/
Next, check your internet connection.
If you are seeing a 5xx error code such as 522 or any error from "Cloudflare", then the website network provider may be experiencing temporary issues. Try refreshing the page or waiting a few minutes.
If the issues persist beyond ten minutes, file an issue on Github.