CRAのウェブサイトには、
You have stopped or will stop working for reasons related to COVID-19, or because you are unable to work due to illness, or because you lost your employment for other reasons beyond your control; and
If you are submitting for the first time, that you have stopped or will stop working for reasons related to COVID-19 for at least 14 consecutive days within the 4 week benefit period
とあります。という事は will stop working とあります。will be receiving income ではないので、お給料の支払い日ではないのでは?
For at least 14 days in a row, during the period you are applying for, you will not receive:
employment income ←コレ
self-employment income
provincial or federal benefits related to maternity or paternity leave