Cloud Agent Becoming Defunct?

I am able to get an EC2 Cloud Agent up and running without any real problem. It'll run just fine for a few days, or a week or two (I haven't actually measured the time yet), but then I'll come into work one morning and try to run a build to no avail. It will tell me that there are no compatible agents even though I know I haven't changed a thing from the night previous.

I've found that if I delete the Cloud Profile and then recreate it (same settings), it will work just fine. What could be causing this is my question? Is there a way to avoid it? It's a minor inconvenience, but it does make CI/CD kind of difficult if I need to keep worrying about if an agent is even going to launch.

Thanks!