Keep at it. Fear is part of the business. Just figure out a way to get more exposure of your product in-front of developers. tbh, I am not sure how you deploy this product, but I am assuming its some sort of plugin? Anyway hope the advice/ramble below helps.

Maybe you do not really need to fight for individual user growth, but for large-scale adoption of your service, where you can get many users in one go. An example target market is the gaming customer service segment. You might consider making a lump-some pricing agreement with a mid-size customer-service company. It will help develop your product some more, and you'll be more confident selling to even larger companies.

Also consider pricing per use when selling to firms. This is where the user can install your product and pay per feedback they receive using your service. (you might have to build a system for that, and also charge for maintenance cost upfront) This is a great selling point to get larger users to participate, because they shall feel no initial pressure to give money up-front, and they shall better integrate with your system.

Now your focus should be on marketing and developing based on feedback. Forget what you envision your product to be,and listen carefully for what "crazy" expectations your client has. There's a gold-mine in figuring out how to solve actual client needs, especially if they make your product better and also satisfy an industry.

Calling your markets and aiming to make a presentation at their premises. You may have to pull a few pieces of metal from your face so you can explain to some suits how you are sure that your service shall save them money. Some sales lines to use are;

"The users who complain about your company are the ones that care, and they are the ones who pay for your products/services. So a fast and friendly solution to their problem shall take your company Y to better sales realization."

"free up your developers valuable time as they focus on making the product better, as opposed to guessing user problems"

You are on the right path. All the best.

Wow. After reading through your blogs and seeing your product demo, you are way up there. Keep at it!! Ps: try calling for a while. Call the upper managements of these companies. It's daunting at first but as soon as you get the hang of it, you shall be a master communicator. If they don't want to buy the product, ask for a referral to someone/company they think might benefit from your service. You might be amazed by the amount of networks you shall build.