Why can't use read.cash with Tor?

There's also one more person, but they seem to have worked it out: https://read.cash/@GoBuildYourFuture/on-climate-politics-469677d7#comment-7976f0ff

We'll check it out later.

If your browser can't connect to https://rest.bitcoin.com - then we can't communicate with Bitcoin Cash blockchain. If your browser can't connect to api.coingecko.com - then we can't know the exchange rate. That's what the red warning label is telling you. Your browser seems to be blocking these connections.

Just dive with a different web browser. It's most certainly an issue with your client.