Hi,
Could you please let me know in which version of Corona you are working on? It will help us to provide better support to you. Also, if possible then please share internal logs of the method. To print the internal logs, put the below line of code just after the key initialization:
local App42Log = require("App42-Lua-API.App42Log")
App42Log:setDebug(true)
regards.
Himanshu Sharma