google translate api v2 not working

[Gibsoniste]

I've created my API key, billing is enabled, I have verified the key, but for some reason i still get this issue.

It says the API key isn't valid, but it is perfectly valid. Am I doing something wrong?

"Perhaps billing is not enabled (or API key is invalid)?"
at Nikse.SubtitleEdit.Core.AutoTranslate.GoogleTranslateV2.Translate(String text, String sourceLanguageCode, String targetLanguageCode, CancellationToken cancellationToken)
at Nikse.SubtitleEdit.Forms.Translate.MergeAndSplitHelper.d__4.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at Nikse.SubtitleEdit.Forms.Translate.AutoTranslate.<buttonTranslate_Click>d__33.MoveNext()
{
"error": {
"code": 403,
"message": "Method doesn't allow unregistered callers (callers without established identity). Please use API Key or other form of API consumer identity to call this API.",
"errors": [
{
"message": "Method doesn't allow unregistered callers (callers without established identity). Please use API Key or other form of API consumer identity to call this API.",
"domain": "global",
"reason": "forbidden"
}
],
"status": "PERMISSION_DENIED"
}
}

[niksedk]

Try reading this: #6773 (comment)