As you all know, the control panels are DEV from foreign developers that only support Latin characters, with accented Vietnamese characters, they are not well supported.
And when you register a Vietnamese domain name with an accented like: đỗtrungquân.info, you will certainly not be able to add to Hosting/VPS. It is imperative that you convert the domain name with this mark to the ASCII code table to be able to add, if you try to do the add, you will receive the following message “That is not a valid domain”
AZDIGI will guide you on how to add an accented domain name to your hosting
Step 1: Visit the website that supports converting accented domains to ASCII code
Bước 2: Chuyển đổi domain sang mã ASCII
After converting, you will get IDN code: xn--trungqun-oza67bs81y.info
Step 3: Addon domain to hosting
So you have finished adding domain accented to hosting already.