I'm getting these errors from Confluence when trying to create issue.

And click 'Allow access' I get this error
Authentication failed!
An error occurred while trying to obtain an access token. For application link
OAuth Problem Details
- Failed to get token from service provider. Secret is missing in response. Response status code is '403'
I've already application link Confluence <-> Jira. but I think confluence to jira is not working normally.
Here is my application links setting

When I click 'Authenticate to see status', I got same error mentioned above.
What does this mean, and how do I fix it?
- Both Connections Local authentication Outgoing / Incoming is OAuth.
- Confluence and Jira is on Cloud.
- I set IP allowlisting for only using within the company
Thank you for your help!