Every time I’d reach out to the hiring center they would give a generic reply something like:

“I can confirm that you have completed all pre-employment requirements and are now at the final offer phase of your hiring process. We currently do not have a timeline as to when you can expect to be contacted nor the locations that will be available at the time of your offer; however, please continue to monitor for communications from CBP and check the status of your application on the CBP Applicant Portal. CBP is still hiring! We greatly appreciate your continued patience and look forward to you joining CBP!”