How to make sure that the site name (cyrillic domain) is not converted in links?

Question

Domain name market

Good afternoon!
Such a problem, there is a site with a domain name in the rf zone and on instagram this address is displayed as xn-fdsfs .... This does not suit the customer. Is it possible to make Cyrillic letters? They say everything was fine before. How can this be fixed?

Answer 1

decodeURIComponent() - javascript
urldecode() - php