Facing the same error and couldn't find a solution. We have a planned demo for the app this week and now we're stuck because of this.
Looking forward the support from Apple in resolving this.
"data" : {
"errorString" : "ITC.signin.error.unknown",
"providerId" : null,
"publicProviderId" : null
},
"messages" : {
"warn" : null,
"info" : null,
"error" : null
},
"statusCode" : "SUCCESS"
}
Simon_Chinnappan
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