Phoenix.new credit seems to disappear

Trying out Phoenix.new yesterday and I went through my initial 20 credit. I went into fly.io and added $50.00 but when I went back to my phoenix.new instances it said I have 12.00 left??? How did I lose $38 almost immediately?

Perhaps I should be contacting someone else but I see no free support at all in the fly.io dashboard or phoenix.new setup.

Hi… For account and billing questions, the best place to ask is billing@fly.io

https://fly.io/docs/about/support/#billing-and-account-support

(Scroll down to “Billing and account support” if your browser doesn’t follow the anchor (#) itself. Safari seems to ignore this URL distinction sometimes, for example.)