Cannot Send Data from Local n8n to WordPress (Timeout & Google Sheets OAuth Issues)

[Les]

1. WordPress API Request Timeout

• I created a workflow that reads data from Google Sheets → processes it with a Code node → and sends it to WordPress using an HTTP Request node (POST).
• Authentication: Basic Auth with an application password created in WordPress.
• When I test the endpoint in Postman, it works perfectly (data is created in WordPress).
• But in n8n (localhost), the HTTP Request node fails with a timeout error.

Question:

• Why does the HTTP Request node timeout when Postman works fine?
• Could it be related to localhost/network/firewall settings?
• Is there a best practice for testing WordPress API requests from a local n8n instance?

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2. Google Sheets OAuth Issues

• I created a Google Cloud project and configured OAuth 2.0 credentials for Google Sheets.
• I added the localhost redirect URI as required: http://localhost:5678/rest/oauth2-credential/callback.
• When I try to authenticate in n8n, I get an “Access blocked: app has not completed Google verification” error.

Question:

• How can I properly configure Google Sheets OAuth for local development without full app verification?
• Is there a way to allow only my account as a trusted tester to bypass this during development?

[King_Samuel_David]

@Les Hello again,

Can you try enable page redirect in option of the http request node.

Maybe it’s redirecting, seems odd it’s working in postman assuming same pc, that the n8n in hosting from?

Samuel