App never loads

I would give this app zero stars if I could! I have been trying to use this app since the beginning of May 2016 and have never been able to get it to load. I have tried deleting the app and reinstalling it, but still no luck! My gym uses the app and website to track weight and measurements. It would be great if I could use the app to record my stats!

Hilary6148 about Fit Clients, v1.0.3