Hello! I am attempting to test my first Paypal checkout application, following the guide. I am able to make test transactions on my site OK, but when I attempt to verify those transactions with the REST API (via Nodejs), I am returned HttpError: {"error":"invalid_client","error_description":"Client Authentication failed"}. I have attempted the following fixes: - verified that I am using sandbox credentials and that the app is reaching out to the sandbox environment - "cycled" my app secret a few times as I saw a post here on the board saying that that can resolve similar issues - successfully used my sandbox 'personal' account to make a credit card payment through checkouts to verify accounts work - enabled "payment pro" option on my sandbox merchant account as I saw a post that this may resolve similar issues - attempted to login to paypal with the sandbox merchant account to see if I need to do setup from that account rather than my own - pw not accepted - checked the sandbox merchant's credentials on the site, they pointed to the client and secret that I am currently using so that seems to be correct. Without more information or an account rep to reach out to I am totally blocked here 😞 Any help? Thanks, T
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