All jobs in the Schedulr module have an associated owner.
Sometimes you may want to change an owner (for example, if user account was deactivated, a job will fail with the "Salesforce: Authentication Failure" error). To change the ownership, navigate to Schedulr -> Jobs, click Edit on the job. Click on the Step 4. Confirm and click Confirm button.
The Owner will now update to your account and a job will run under your user credentials.