DTA must decide on your application within 30 days and either pay benefits or deny your application. The 30-day time limit can be extended if you ask for more time to get proof of eligibility. 106 C.M.R. § 702.160. If you get a notice saying you did not supply enough proof, you have 30 days from the date of the notice to give DTA more proof.
If you are required to do job search to get benefits and DTA thinks you did not meet the job search requirements by day 30, DTA may grant benefits only for your children by the 30th day and in some cases may deny benefits altogether. See Do you have to meet job search requirements before you can get benefits? DTA may not be enforcing pre-benefit job search during the pandemic.