I see that you have no privacy policy on the site and your help section mentions that no KYC will ever be requested by the users. That's a positive thing and I hope it's true.

A couple of thoughts and questions.

1.You don't mention anything about fees. What percentage do you take from an exchange? Are the rates fixed, floating?
2. Is the exchange window 30 minutes for the initial deposit transaction to your wallets? Do the rates change during this window or remain fixed?
3. You should add accurate live information about your crypto reserves that users can check before depositing money into your exchange. You don't have that.
4. What's the minimum and maximum trade?
5. Please don't call your service "non-custodial." People will get the wrong idea. It's a custodial service. I know what you wanted to say: you hold the keys and not a 3rd-party service. But for the end-user it doesn't matter. They don't hold their own keys and need to trust you. Hence, it's custodial and not trustless. 
6. You can get in touch with the people behind https://kycnot.me/ to see if they can list your exchange on their website.