Yes, as you said, after the ETH wallet address is created, the user has a faucet coin.
—
I already knew the operational instability of the coinpayment, but I thought I did not have to worry about ETH or BTC relatively.
Maybe in the future coinpayment will not have this problem in a major coin like ETH,
but I have come to think once more about the preparation on the operational level based on this experience.
I hope that it will help us and leave my case.
Currently, the ETH node of coinpayment is normalized,
and our users who did not have ETH address were automatically created the address.
Thank you for answer.