The only odd thing here is that it will come back online again after some time, but when I hit this sub-domain three or four times, it will go offline again. Am I hitting a limit of the free tier? How can I debug?
Edit: on the sub-domain, I get this time out error:
I have two workers, both with custom domains. Worker A calls worker B via fetching its public url, in order to take advantage of it’s cache (worker B is effectively a CDN for worker A.