If you're clicking on the bell icon and nothing is happening it probably means that you have no Welcome message configured and/or you don't have Conversational mode switched on.
Your Direct Booking Coach will have set up a Welcome message for you when you first signed up with Triptease, but if this has somehow been deleted it's very easy to replace.
Just click the cog icon in the left hand menu to open your Settings and then click Chat. For each hotel you have set up with Chat you'll then be able to add and save a Welcome message that your customers will see when they click the bell icon on your website.
Switching on Conversational mode (that means potential guests are able to ask questions and reply to you) is done in the same place. For each hotel just use the Allow customer replies toggle to set whether or not a hotel is in Conversational mode or not.
If you've added a Welcome message and switched to allow customer replies and you're still having issues, please get in touch with your Direct Booking Coach.