Chrome Packaged App InApp payments

[Nic Roche]

Hi,
What is used to to create JWT (jot) packets in the .Net world?
I have used InstantBuySample/Library but cannot verify the jot because of the 
different Merchant approvals between InstantBuy and InApp payments - getting 
this console response output:
{error: "MERCHANT_ACCOUNT_ERROR", details: "Merchant account not found.  Please 
check your ID or contact Google."}
I have contacted google, with no meaningful response.
Any shared experience is appreciated..
Nic