That could be frustrating. It's an interesting problem. I think the knowledgeable people of YC would probably have an answer for you on, or a way to think about, what to do in the situation where you have unworkable churn and when you talk to your customers and they all have different advice depending on their type.
I don't know if it well help you and I don't know anything about your business but I'll throw in my 2 cents since you're asking for opinions.
Even tho it sounds from your post like you'd like to sell it, the sense I get is you'd actually like to save it if you can. It's your baby, right? And this whole process is extremely frustrating to you. You feel the pressure right now, right? So what I see is this is a sort of real crisis for you. So that's where you are.
And so my question for you is what did you want to achieve when you started this business? What was your goal for it or the very cool idea you had in mind? If you can find that maybe you can get back to that. And if you need to make some changes, and drop some types of customers, and focus on other types of customers, to get back to your core purpose with this, then you'll do that, because this business is that important to you. You're welcome.