I have a problem with switching to Live. I had changed my credentials to that ones from a Live Tab at https://developer.paypal.com app panel. I can see following error:
Got Http response code 401 when accessing https://api.sandbox.paypal.com/v1/oauth2/token.
Same code with sandbox credentials is working very well. So it is still trying to access sandbox and get reject because of course live credentials are not correct at sandbox.
Strange problem, please for help.