I'm seeing a lot of errors related to API Key usage in the error logs and have put a quick two minute video on this below.
What I'm seeing is the Wrong model being chosen for the wrong API key and API keys running out of funds. Happens to me all the time as I only put $20 on at a time.
When you go to one of the skill rooms, just make sure you choose the provider for your API key and the model you want to use and the effort (if that model has efforts). Medium is good for most prose, low is good for Q&A to save some costs.