Hello Fresh seems to now have a two-tier referal system.
If you're looking for a free first box, use the referral system below that says $128 off first box. $128 is enough to cover a 4 persons 3 meals box, you'll only need to pay $9.99 shipping.
Note that some of the codes are not working properly. Just keep clicking on the random link until you get a code that says total to pay is $9.99 (shipping) for a 4 persons 3 meals box.
No need to message anyone, they won't be able to give you anything more than $128 off the first box.
Referral solicitation, codes, links, asking to PM are not permitted in comments. I've updated the referral system and split the codes for $128 off (codes with FIH) and $50 off (codes with HS).