Hi ExasperatedCat38 ,
Welcome 🙂
From the link you sent, it seems you're using the demo server, not the ClearML Free Hosting ( https://app.community.clear.ml ).
The demo server does have a default queue (you can see it https://demoapp.demo.clear.ml/workers-and-queues/queues ), but it's possible you've stumbled upon the weekly reset which clears all data (and at which time everything is recycled, including the queues).
The services queue is used by the services agent which runs locally on the server machine and is not configured to run training tasks like the one you tried running - I suggest you simply create a new queue, and set up your own ClearML Agent to use it and execute your experiments on an appropriate machine.