Tempo API oauth2 access

Hello Folks,

i write a app with forge and try to POST some data to the tempo planner addon.
Therefore i’ve created an oauth2 access as described here(Using OAuth 2.0 Authentication)
As redirect i use:
https://id.atlassian.com/outboundAuth/finish
But it is still not working, as click through the authentication pop-up tab i get:
“We couldn’t connect your account. Try connecting your account again.”
Anyone any idea what could still be wrong ?
The manifest.yml:

modules:
  jira:projectPage:
    - key: tempo-multiuser-macro-hello-world-project-page
      function: main
      title: tempo multiuser macro
  function:
    - key: main
      handler: index.run
      providers:
        auth:
          - tempo
app:
  id: **

providers:
  auth:
    - key: tempo
      name: Tempo
      type: oauth2
      clientId: **
      remotes:
        - tempo-api
      bearerMethod: authorization-header
      actions:
        authorization:
          remote: jira-base
          path: /plugins/servlet/ac/io.tempo.jira/oauth-authorize/
        exchange:
          remote: tempo-api
          path: /oauth/token
        revokeToken:
          remote: tempo-api
          path: /oauth/revoke_token
        retrieveProfile:
          remote: jira-base
          path: /rest/api/3/myself
          resolvers:
            id: accountId
            displayName: emailAddress
remotes:
  - key: jira-base
    baseUrl: https://*.atlassian.net
  - key: tempo-api
    baseUrl: https://api.tempo.io

permissions:
  scopes:
    - read:issue-details:jira
    - read:application-role:jira
    - read:group:jira
    - read:user:jira
    - read:avatar:jira
  external:
    fetch:
      backend:
        - 'https://api.tempo.io'

and in my index.jsx i just try:

const tempo = api.asUser().withProvider('tempo', 'tempo-api');    
      if (!await tempo.hasCredentials()) {    
        await tempo.requestCredentials();    
      }    
      console.log("YOU PASSED !")

But i never reach the Log.
I am happy about every help i can get

Greets,
Hannes