Advice on responding to a broker who requires a purchase agreement prior to LOI or meeting the seller?

I am seeking advice for a broker situation that I am trying to navigate as I found a business that I really like and really fits my expertise. I submitted an LOI, SBA preapproval letter, and a bio about me to the broker a week ago. I am an existing business owner so I have experience. I got zero feedback on my offer terms. The banker that has pre-approved this deal says he has no offers he’s working. I don’t know that seller has seen my offer, I’m not allowed to meet the seller until I submit my PA and raise my price was the brokers response. He won’t answer phone calls, I’ve had to email since the beginning. I would normally walk, but this deal really supports my zone of genius. Any suggestions on how to best navigate this deal/broker? Asking- 1.22M Offer 1M