I'm not quite sure what you mean here as I do provide support to our Cloud, as well. We would only provide software support for our Classic (self-hosted) licensed individuals. Supplying PHP configurations, like you are asking for, would be outside of that support as it is supporting servers, rather than software.
Outside of the information already provided, working with your hosting provider on why you are having issues here would be the best method of support as they should be able to capture the error which is happening here while the upload is being processed on the server and help you troubleshoot it.