we've discussed this in your other thread, split key should NOT be optional
and your split key feature doesn't work for me, it keeps giving me error
can someone else confirms this, or it was just an error on my side

I will try it.

User Velkro and their private key stealing vanity generation site BitcoinVanityGen (.) com <-- SCAM has caused significant financial harm to many people when he stole their coins. No one wants to see a repeat of this and thus anyone offering such a service can be considered high risk, making TryNinja's trust feedback valid. "You think that trading with this person is high-risk."

The user also told people to trust him when announcing the service. People are making a big deal because you could be preying on those new to Bitcoin who wouldn't know how to use split key or the risks of having you generate a vanity address for them.

Make a tutorial. It's not hard. Maybe put some images and you're done.

Example:

1. Go to Bitaddress.org (optionally download its source code on https://github.com/pointbiz/bitaddress.org/archive/v3.3.0.zip) and open it;
2. Move your mouse around until 100%;
3. Click on the "Vanity Wallet" tab;
4. Click on "Generate" and don't close the tab;
5. Paste the "Step 1 Public Key" in the generator's split-key field and click "Generate Address";
6. Meanwhile, go back to bitaddress and paste the "Step 1 Private Key" into bitaddress' first box;
7. When the service finds the address, paste the generator's "BTC Privkey part" into Bitaddress' second box;
8. Click "Calculate Vanity Wallet";
9. It should show your vanity address private-key.

Stop giving excuses. Make your service truly secure.

Security > Usability. Otherwise, we should just use Coinbase.

even if it's an open source project, OP knows the private key and can steal the fund
offering vanity address creation without partial/split key method is never recommended
if he wants to offer such services, he needs to do it like ThePiachu's or LoyceV's vanitygen service

Is this an open source project? If not, then you're wasting time, there are a lot of guides on how to make a vanity address, legacy, segwit nested and native which are more secured than using some random and close source services such on OP.

[Guide] How to create your customized Bitcoin-Address (vanitygen) – step by step
[GUIDE] How To Create Vanity Address (Segwit)

What is the price?