The y99.in Website seems to have what you want. You can create an open chat and share a like to it. People using the like only need to choose a unique usernam

The y99.in Website seems to have what you want. You can create an open chat and share a like to it. People using the like only need to choose a unique username. Here is a example chat I created. https://y99.in/web/desktop/pages/807632 https://y99.in/web/desktop/pages/807632