Under current state law (until March 2022), if you have applied for rent relief and are eligible for help, you have protections against eviction, even if you have not yet paid your back or current rent by the deadlines.
Beginning Oct 1, landlords may issue a 3-day notice to pay or quit for unpaid rent, but it must include language about how to apply for rent relief. You have 15 days to apply for help from the state program if you have not done so already, and should write a letter to your landlord informing them when you have done this. and instructing them to do so within 15 days.
Your landlord cannot proceed in the eviction process (get a summons for an Unlawful Detainer) without certifying to the court that they applied for rent relief and the application was denied or that they applied for rent relief and that they were not notified that you applied for relief within 15 days.