Sorry to hear that.
My dot click domain was blocked for many people so thought it was better to shut down the hosted version. Will setup a new one when I have the chance to. But even better; if you have some dev experience you can host it for your self and you aren't dependent.
You can hist the whole thing yourself with yarn: `yarn install && yarn build && yarn preview`
Or just copy use the files from https://github.com/f90fwT/nostr-chat-widget/tree/main/static/public and use them in your website