iATKOS | United Kingdom

I am having troubles getting iMessage to work despite trying every guide I can find, including but not limited to multiple YouTube videos, "An iDiot's Guide To iMessage," "Getting iMessage working on El Capitan and Sierra," and even resorting to searching random iMessage help request threads on this sub to try the most common suggestions. I can provide any information needed but I really need to get iMessage functioning correctly as it is the sole purpose of the hackintosh on this machine. Any help or suggestions are very much appreciated, thanks!