Need money for apartment deposit

Hello, I have fallen short on my deposit for my apartment that I'm supposed to move into tomorrow. My deposit is $800, I have $500 promised to me, I still need $300. I am getting help from community resources for the $500, the local resources will not help with a pet fee or a pet deposit, I wasn't aware of that prior, so I didn't have time to try and find other resources to get the rest of the deposit. Im currently waiting on a ssdi/ssi appeal and am unable to work, otherwise I would have the money. I'm also unable to sell plasma due to some medications I am on. Im in the US and I have PayPal and Venmo if anyone can help. I know $300 is a huge ask, any amount would help. I appreciate anything in advance.