get to a view where there's "find my location / no thanks" and there's a button at the bottom for "Order History" (because the user is logged in.
Press "Order History"
If there is no Order History (because orders were cancelled), the view with the BUY MORE PIV button must have below it, "You have no order history with PIVX for iOS. To see your full order history across all devices, visit https://wallofcoins.com" -- and the https:// website will be a link that the user can press.
After pressing Order History, the Buy Summary page shows but then the page immediately goes to the Buy PIV With Cash area. This behavior is fine; however, it seems like a bug because the user still cannot see their order history.
Hi  I have uploaded 2 builds for PIVX with resolved this Github ticket
1) 2.1(3) (TestNet) and
2) 2.0.1 (3) (MainNet) in Fabric.io.
you can install PIVX app from Fabric from your the Email sent on your email Address
After pressing Order History, the Buy Summary page shows but then the page immediately goes to the Buy PIV With Cash area. This behavior is fine; however, it seems like a bug because the user still cannot see their order history.