I invited one of my friends to the game and I didn't get the promised reward

[HDMaster01]

Hello!
There is such a problem that I invited one of my friends to the game, based on what was described. I sent him a like through which he registered and theoretically, according to the description, I should have received the rewards as described.
My friend's name is among those invited, and the interesting thing is that he received the rewards. What do you think could be the problem?

[jttoo]

When you refer a friend, your friend gets 200 em$, a 5x30mm Rangefinder, a Moose caller and a scent eliminator.

You get rewards if they then purchase EMs.

https://www.thehunter.com/#rewards