I have installed PayPal plus extension from Iways, on magento version 18.104.22.168. Locally works everything fine, on my dev environment I receive the error
Provided credentials not valid.
Webhook creation failed.
I have sandbox account everything is ok. I have checked the client id and the Secret key, no errors. The lib folder from the extension is also there.
I really don't understand why I receive this error that the credentials are not valid.
Anybody any other idea, I will appreciate.