With the shutdown of the federal government most functions of the TTB will cease. This includes the processing of COLAs, formula submissions and all permitting functions.
According to their web site, “there will be no access to TTB’s eGovernment applications including, but not limited to, Permits Online, Formulas Online, and COLAs online.
Additionally the web site states that “no personnel will be available to respond to any inquiries, including emails, telephone calls, facsimiles, or other communications.”
TTB web site statement here.