For some odd reason, the characters (when coverted to PDF) show like this.
https://imgur.com/a/LLtcH
FireFox 58.0.2 64-bit - this not happening in Chrome or Safari.
$docx->enableCompatibilityMode();
$docx->createDocx("temp/".$ID);
$docx->transformDocument("temp/$ID.docx", "temp/$ID.pdf");
header('Content-type:application/pdf');
header('Content-Disposition:inline;filename="Plan - '.$bp->Name.'.pdf"');
readfile("temp/$ID.pdf");