Hi @elmi,
I am sorry you are having an issue unbonding using the keep3r.network app.
The best place to ask for help with this should be in the Keep3r forum: https://gov.yearn.finance/c/projects/keep3r/20.
To run a keeper using OpenZeppelin Defender is fairly straight forward, please see the guide in the documentation: https://docs.openzeppelin.com/defender/guide-keep3r
One thing to note, is if you want to work additional jobs to the ones in the example script, you would need some familiarity with JavaScript. Please see: https://docs.openzeppelin.com/defender/guide-keep3r#create_an_autotask
You could start running a Keeper using Defender bonding zero Keep3r. See this related question: Bonded kp3r & other erc-20 tokens from personal wallet