IOs - purchaseSubscription

[Kao14]

I got the solution from Vlad:

IAP not working correctly with Corona-2019.3528 and IOS 13

@vlads, Great News. Thanks for your help in this! Just two questions: If I remain with the core and build using 3564+, is it backwards compatible? meaning, do I cover iOS13 but also iOS12 and back? There are additional methods in the Plug-in version and its not clear what each does and how they integrate to the previous workflow we had in core. can someone provide the intended behavior end to end with the new plug-in?

Info: Subscriptsions would have expires_date field.

Thanks!