That error means that the API credentials being used are not correct. This could mean that one of the values is wrong, or it could also mean that you have live credentials entered when the tool is using the sandbox or vice-verse.
If you’re using live credentials make sure the Sandbox / Test mode is disabled. If you are using sandbox credentials make sure that it is enabled.
Thank you for the fast response.
That’s it exactly. I was using live account info in the sandbox fields.
After some experimenting, I found my sandbox accounts on Paypal and used all the info from a Business Sandbox account. Then, in WP under Settings > WP Paypal Button Manager, I entered that info in the (Sandbox) section, and it works.
Thanks.
Glad to hear it. Let me know if you have any other questions. I know we sort of lack documentation at the moment.
The 1.0 update will be coming out soon and I’ll be updating documentation at that time.