I don't understand from where do i get this credentials I have devid, appid and certid but I'm very confused by this auth stuff. I can create an oauthUserToken here https://developer.ebay.com/DevZone/account/tokens/?index=0&auth_type=oauth but this is valid only a few hours. Is this the right token? (It's only valid a few hours - why write it in the config file?)
and where do I get this 'YOUR_SANDBOX_USER_TOKEN_APPLICATION_KEY'
'sandbox' => [
'credentials' => [
'devId' => 'YOUR_SANDBOX_DEVID_APPLICATION_KEY',
'appId' => 'YOUR_SANDBOX_APPID_APPLICATION_KEY',
'certId' => 'YOUR_SANDBOX_CERTID_APPLICATION_KEY',
'authToken' => 'YOUR_SANDBOX_USER_TOKEN_APPLICATION_KEY',
'oauthUserToken' => 'YOUR_SANDBOX_OAUTH_USER_TOKEN',
'ruName' => 'YOUR_SANDBOX_RUNAME'
Thanks in advance