It turns out I'm dumb at calculating profit heh
The Bloom tier had -50% discount for Twitch subs, because I misscalculated it. At first I thought the 50% is a discount for tier 3 Twitch subscribers, which in reality was for all tiers. Due to that, I underpriced it.

From 22nd of July and for the next 30 days, Twitch subs discounts will be turned off to implement the changes. It can be changed only once all current users of the discount will end their memberships, so I'll update it as soon as possible. New discount will be 30%.

Feel free to extend your memberships for the next month now, when the discount is still running, but please do it for one month only! Then feel free to cancel your next month's membership and wait until the new discount will apply. Thank you for understanding and so sorry for the inconvinient.