Sometime in the past 10 days the began shipping a product that is most definitely NOT mephedrone. Looks different, tastes different, and does not have the same effect on my plants as a batch from last week did. This occurred at the same time they stopped accepting credit cards directly.
I was a long time customer, and I can't say I would do any different if I were in their position... But I guess the Chinese ban was too much for them.
Good luck.