I had to reboot my iphone 10(iOS 12.1) from scratch and re download all my apps. When I open up Spotify, it automatically puts me into a random username with a bunch of numbers (not the same as my account). I have Premium and am able to log in on the computer. On the app, it has no place to log in (or log out for that matter). The choices at the bottom are Home, Search, Your Library and Premium, each of which take me nowhere to login. On the Home tab, I can click on the setting button in the top right, and then clock on account but that again takes me no where to login. Please help!!! I've tried deleting the app, rebooting and redownloading and that doesnt help!