I applied for a job in 2019 and tried to reapply but I was unable to. I called the school for help but they said that my application wasn't on file so I tried to reapplied but I'm still unable, I even took down my application and i'm still unable to apply.
To assist you further, would you please provide the link to the portal that you are trying to submit your application?
You will need to reach out to the HR department for the organization you are applying to. They should be able to help with your application specifics.