My iPhone app has to install everyday

I have the premium version, yet everyday it says I need to buy the premium version in order to access the presets. So I click on free trial/buy yearly and it says I already have a subscription. Then it starts updating. Stating this might take a while. It has done this EVERYDAY! On the few days it updates quickly I use it with ease and love the pics with the presets. I need help. I deleted it & reinstalled. But seriously this is so annoying. I have the iPhone