Rule change for Mobile tie in event

Recently there has been a tie in event with the mobile game which allows you to get a promo m4 if you get 1st place in 3 battles. It was said on the community post that this could be done on either naval or tank mode. When I got 1st in a naval battle there was no progress and in a recent update to the game they changed the wording to say tank battles only. It is basically impossible to get 1st unless you pay because there is no br system meaning a t34 1942 is facing tigers and panthers. Pretty dishonest and disappointing for what should’ve been a fun tie in event.