GoogleSignin_demo issue

Hi,
I downloaded the GoogleSignin demo from github: GitHub - scottrules44/googleSignIn-demo

I then created a OAuth 2.0 client ID credential with the Package name:
com.solar2d.app.googleSignIn_demo
and SHA-1 (debug.keystore in solar 2d setup directory):
00:85:F2:62:A2:91:F0:D1:CE:9E:E9:FB:CD:1D:50:E7:82:6D:BE:9D

I got my client ID and pasted that in main.lua in the beginning. I am just trying to simulate it in an Android environment for now. I am not using firebase.
My build.settings looks like this:

settings =
{
android = {
usesPermissions = {
“android.permission.INTERNET”,
“android.permission.GET_ACCOUNTS”,
},
},
–[[
iphone =
{
plist =
{
– UIApplicationExitsOnSuspend = true, – default is false
CFBundleIconFile = “Icon.png”,
CFBundleIconFiles =
{
“Icon.png”,
“Icon@2x.png”,
“Icon-60.png”,
“Icon-60@2x.png”,
“Icon-60@3x.png”,
“Icon-72.png”,
“Icon-72@2x.png”,
“Icon-76.png”,
“Icon-76@2x.png”,
“Icon-Small.png”,
“Icon-Small@2x.png”,
“Icon-Small@3x.png”,
“Icon-Small-40.png”,
“Icon-Small-40@2x.png”,
“Icon-Small-50.png”,
“Icon-Small-50@2x.png”,
},
CFBundleURLTypes = {
{CFBundleURLSchemes = {
“com.googleusercontent.apps.replace”,
}}
},
},
},]]
android= {
useGoogleServicesJson = false,
},
plugins = {
[“plugin.googleSignIn”] = {
publisherId = “tech.scotth”,
marketplaceId = “MY MARKETPLACE ID”,
supportedPlatforms = { android=true}
},
},
}

I have made sure the Google Sign In plugin is activated after I login to my account at Solar2d Marketplace

Now when I open the project the project loads fine but I get a warning (2 times):

WARNING: The ‘plugin.googleSignIn’ library is not available on this platform.

And now if I click on the Sign In text this warning pops up again on the console and nothing happens i.e. no Sign In progress happens.

When I build the project I am able to get further on the android device. It provides me the login/account selection page. But after that it gives a popup saying the following:

Sign In Cancelled
{"Status":"cancelled","data":"Bundle[{googleSignInStatus=Status{statuscCode=DEVELOPER_ERROR,resolution=null}}]","isError":false,"name":googleSignIn"}

Any help on how to get past this would be appreciated.

Do you set:
marketplaceId = “MY MARKETPLACE ID”,

And replaced your own google-service.json ?

I did, since the error is DEVELOPER_ERROR it seems it may be due to my Oauth authorization to be in Developer mode?