Customers can initiate chat, but I can't accept the chat or read replies

Content

I'm attempting to set up chat. Some features are working - the bar in the top right lets me log in and out, and I get a pop-up asking if I want to accept and incoming chat. From the customer's perspective, it works - they wait in the queue, start the chat, and can send messages.
When I hit "accept" for the chat, I get a pop-up error "Table id not available for: Chat". Nothing else happens. I see it in the top right on the little chat toolbar (shown in picture) but I can't open it. I have assigned chat workspaces for my profile (also shown, but I tried a variety of settings) but I am unable to open them (the editor crashes and I receive an error: "Could not find data dictionary data for ChatId (TBL_CHATS)".)