Experienced Coinpayments API Specialist Needed

Job ID: 38365377

Budget: $10 – $30 USD

I am using this api in a project and when I want to process the payment I get the following error:

Error: That is not a valid address for that coin!

I'm looking for a person who has already solved it without asking so many questions, maybe it's stupid but I can't find that error.
Related categories: PHP Laravel API