Spotify intergrates only on wifi

I have been using djay 2 on my iPhone for a long time. I even use djay pro on my mac. Since the update, I can not connect to my Spotify premium account using my cell service. I keep getting log in errors. Spotify only works when I am connected to wifi. This totally defeats the purpose of mixing on the go if you cant use your cell service. Please fix this problem.

robedizel about djay 2 for iPhone, v2.8.5