my plan subscription changed & can no longer access any invoices that i had created.

I was comparing different plans, didnt click to change ans my plan automatically changed. Im not unable to log into my mobile app as ended up on a different plan an have lost all my invoices that i had created as well as some milage history. so far all i can see is an option to manually recreate invoices which clearly wont work as I don't have access to the original data. I just want my old plan and app access back, please help!