Download resume with php



Hi, first let me say I know nothing of php coding.
My question is, I know Dreamhost supports download resume, had it for years for downloads of my website.
I now changed my website to a WP blog with plugin s2Members which handles memberships and all protected files are in their secure folder in my wordpress domain. Now when downloading a file resume is no longer supported. The programmer of the plugin simply told me that php does not handle download support, it is impossible with php.
As I said I know nothing of php, but I do know that impossible is a word never used for scripts/programmers and so. There is always a way around.
I Googled and found so many links to php download resume, which gives me to believe it is possible.

So does any one have any advice on how I can get download resume back.

Thank you and regards, Ron