How can I add a welcome message to the testers page to be displayed before the user writes anything? It is important that this message is displayed first because I want to explain a series of bot instructions to guest testers.
When you create the link to be shared with the testers, you can enter a title and a description.
You already entered “test” as title, just put the instructions in the description.
This is done via the web app.
More info here: How to let bot start the conversation