You can put away the pitchforks, this is not a scam, or an attempt to get people to donate under some false pretense. The milestones are an incentive to encourage people to donate.
It is very obvious to me that the information in our article is not clear enough, so I will be rewarding the milestones rewards to everyone who has donated, through 9:00 AM CT today, July 12th, 2021. I will also be updating our article to reflect that in order to be eligible for milestones donations should be received prior to reaching that milestone. Please note, that I only have the information you entered into Tiltify during the donation to issue these awards, so if you did donate, but did not provide either an email address attached to your NA WoWS account or a username in the donation field, you won't get these rewards. If this is the case for you, please contact me VIA DM.