Oh!! I'm truly sorry about that!
I will say, My game takes a while to load for mobile devices and I also know it can run a little better if you switch your Web browsing app to a desktop view! Try either one of those things and I hope it works!!
If it doesn't, I am truly sorry!! This could be a hardware or app issue. If it's not too personal, I would really appreciate to know the model of your mobile device is and what app you may have been using. This may help me in the future if someone else has a similar issue to this.