https://www.irs.gov/charities-non-profits/charitable-organizations/automatic-revocation-how-to-have-your-tax-exempt-status-reinstated
Automatic revocation - how to have your tax-exempt status reinstated | Internal Revenue Service
Fact sheet explaining how an organization can have tax-exempt status reinstated, when status has been revoked for not filing annually as required.
tax exempt statusinternal revenue serviceautomatic revocation