Ah terrific, they've denounced JK Rowling (to whom they owe their existence) and are donating part of their takings to Scottish Trans Alliance:
"Many of you may be aware of JK Rowling's recent tweets concerning transgender issues. We have been very saddened and dismayed by these and do not condone the views she expressed in any way.
It’s a difficult time to be a Harry Potter fan for many but we sincerely wish JK Rowling’s views not to diminish our appreciation of the books and their messages of inclusion and tolerance."