So it says that you provide a free $10 a month of credit. Is there a charge for servers not setup on a server thing https://fly.io/docs/about/pricing/#compute and would it be possible to upgrade 1 of my servers to micro-2x using the $10 of credit and not having a cost for the other servers.
That’s actually the server type VMs default to on a new app. You can use flyctl scale show to check.
The $10 credit will work for micro-2x, yes.