incase someone has this problem:
When you try to add currencies in your database, do not change its name. when you created for example bronze coin. instead you want to delete and then create a new one.if you dont delete it, for some reason it will mess up your currency view prefabs.
To fix it you just have to search all prefabs that has the multi currency view attached on it.
It will give you some warning about something not matching with the database, just click the button below it and then assign your currency again.