Thanks for the explanation.
I don't really mind, these sort of things do happen, cost of doing IT.
But I would love if there was a change log or news page, or a version number increment on the API documentation that I could lookup just to see if any changes to the API has been made. Even if it wasn't an actual change-log but just a sentence "we've made changes at this date/time" then it would help me quickly identify if the problem was on our side or a change in API side and it would be faster to get it resolved