Welcome to the Nexus!
There does seem to be some kind of pressure from authorities or at least a desire from these companies to take their name away from what can be seen as illegal business to prevent possible legal problems, and mimosa hostilis has been somehow a target. In the UK it had become much more difficult to get mimosa, also in USA there has been some apprehension by customs.
The thing is, a lot of mimosa comes from adenium, I dont know if its blacklisted by some customs or something.. I think its always better to order from inside the country if possible.
Thats why part of the work in the Nexus is to find new plant sources people can find around the world and/or grow themselves, as well as teks using a variety of methods that people can adapt, so that they can consciously and safely use entheogens and extracts. Basically this can help making enforcing the war on drugs related to psychedelics even more impossible, and increasing personal autonomy. Any help in experiments and sharing info are appreciated