I was experimenting with this platform and created an app , while i was playing with it I shared with some friends to have their suggestions. at one point the app locks and ask me a paid plan. How can I go back to test app ? If i try to start a new a...

I know i can group items by one column and sort by another existing columns, but I need to order based on a value calcolated from multiple rows and not just by one (eg. Average of values). I have a list of of record with names and associated points f...