That could be it. I don't know... it was just announced, and it's being completely shut down in a month. I've been kind of removed from it for a while, and I don't really love TM itself, but it still makes me weirdly sad.
there was a tumblr explaining it. Saying that once the government got on their asses about the complete sheets instead of reducing their prices and making it more available to the players, they increase the prices of their gacha and lower the probability of getting an animated. It was clear TM was trying to shut it's site down after that, while trying to leech as much money out of their players. Also it encourages gambling in kids which is why their system is illegal from the get-go