I logged into ChatGPT (Plus with Beta and Apps activated) today I had a chat yesterday where I was using the apps specifically Whimzical. I sent an instruction to ChatGPT and got the following response. "The previous model used in this conversation is unavailable. We've switched you to the latest default model."
I opened a new string in ChatGPT to use the app and found that they are no longer in the drop down under Chatgpt4. I checked settings and Beta has been removed.
I attempted to log out and log in and got the same message as @candid field ""We ran into an issue while signing you in, please take a break and try again soon" I got back in by going to Incognito mode but still apps and Beta are down.