CERB repay

CRA looking for additional info to determine CERB elegibility. Bank statements not an issue, but have no payslips to provide as was not working due to Covid. Also they want ROE which was previous employer in 2019. I can prove the $5000 made in previous 12 months. Are they wanting bank statements to see if a payroll was being deposited during the time frame? Just trying to get a feel for exactly what they are looking for . Thanks