It appears that if your LA rental home is not your primary residence you are no longer allowed to rent on a short term, less than 30-day basis. I have not researched this recent LA regulation, but do see that AirBnb has an article you should read to better understand the new regulation, along with links for more information. I'm sorry if you are no longer able to rent for less than 30-day periods Here is their article: Los Angeles, CA | Airbnb Help Center
"You host a secondary residence, like a second home or vacation home
Second homes and vacation rentals are not eligible to apply for home-sharing. If you’d like to continue receiving bookings, you can switch to long-term stays (30 or more nights), which don’t require a permit number in Los Angeles. You can update this in your availability settings.
Airbnb continues to advocate for reasonable regulations that address short-term rentals in non-primary residences, and as a result, the city has taken the first steps of drafting an ordinance that would regulate second homes and vacation rentals. We’ll update hosts as soon as more information is available."
I just saw this group mentioned in online news that you may want to join, including a link to a petition for you to sign.