What is the ruling on receiving five million [currency unit] in exchange for enrolling other individuals in a training program, knowing that I have already paid 3.8 million [currency unit] in advance, and is this money lawful or unlawful?

The ruling on the five million revolves around the permissibility of your joining this company. If the amount paid is for a subscription or in exchange for an unintended commodity, then neither joining nor the earned money is permissible. However, if the prohibitions are absent and the conditions mentioned in Fatwa no. 118784 are met, then joining and receiving rewards are permissible.