hey kyexvii,
Thanks for your post. Please note that this is a Tech Demo, not a Finished game yet. The Bugs you mentioned are known and are currently in a fix. The fixed Version will be uploaded today.
Premium Currency has no function yet but is implemented as placeholder.
Its meant to be, that you dont know what you unlock next. This way you have to explore the game and the Upgrades you get. For some there are hints in the description of the previous Upgrade. Also the unlocks are not random and always a better Version or something you can do with the previous ones.
Its like a workbench. Without a Computer and knowledge you cant make your own Onlineshopping.
I hope you get a better opinion as the programm state continues.
Cheers Nono