i have build a simple shop and want to use my PayPal Plus Account, so users can pay per PayPal, Credi Card and Bank Account. In Sandbox Mode everything works perfect, but when i switch to Live Mode an use the Live credentials for my app i got this:
{"error":"invalid_client","error_description":"Client Authentication failed"}
I have tried 3 different Apps now, but nothing worked.
In my developer account is no error message or warning that i cant use this or something like that.
Do i have to make an review process or something like that to use it in Live Mode?
Update
I have used the worng mode in the PHP SDK. Now i get no error from the PHP SDK, but the Javascript SDK which schould build the Paywall gives me an 403 Error.