Assuming your monthly expenses are ~$20 (server costs + miscellanae), you’re telling me you have two paying customers at $10/month, and you sank $85k into this?

Assuming your monthly expenses are ~$20 (server costs + miscellanae), you’re telling me you have two paying customers at $10/month, and you sank $85k into this??! Cut your losses, friend, and don’t invest any more money into it until you hit at LEAST 10k monthly recurring revenue. I would sell it if you can get anything over $1000. If you don’t want to sell the app, start cold calling again and get wayyyy more customers. Target companies with the same need as your current paying customers, hop on LinkedIn, and start dialing/emailing. If my initial cost assumptions are way off, please say so! Because if instead your customers are paying $X,000 a month that changes things.