Merchant ID

Our team want to transfer money to card with Apple Pay. I am iOS developer. I have access Admin. I created Merchant ID. I added domain. Our backend team uploaded .txt file to database. Url is working, you can see .txt file content when open it. But when I press verify I get error as following:

Domain verification failed. Unable to access verification file on server. Confirm that the file is in the correct location, proxies and redirects are not enabled, and the documented Apple Domain Verification IP addresses can access your server.

Please, help to fix this problem.

Merchant ID
 
 
Q