Using prefect cloud, have a very simply flow running. Sometimes my flows just don't run and are in a scheduled state, the agent is running it is waiting for flow runs. It seems to work fine the first couple times, any ideas?

Hi @Will Milner, and welcome! Most of the time, this can happen when the right labels aren’t attached to a particular agent. Take a look here: https://docs.prefect.io/orchestration/agents/overview.html#flow-affinity-labels

I think the labels are fine, in the example the flow took 10 mins to run, I had a manual step, and although I resumed it straight away it still took a while for the agent to pick it up

Ah I see, are you on the Developer tier of Prefect Cloud?

Yes

You may have a submitted run somewhere taking up a concurrency slot