Hey, I don't know if you solved this or not, but I experienced the same issue and resolved it by reimporting the products. I had some previously iported products with variations and this plugin broken the variations. I reimported those products with this plugin and the variations were visible.
I JUST bought the Alidropship plugin for Woo last night. I am also experiencing this issue and it is NOT theme-related. If I disable your plugin, the variations all appear fine. When I activate your plugin, variotions get broken and no order can be made. PLEASE help me with this asap!!