Try logging in to the Mogstation and see if you can find the Character in the list, if the name is in grey with no link then you'll have to wait some time for it to show up in the Search.

If the name is in blue you can hover your mouse cursor over it to see the characters ID in the URL (character/0000 <unique number), you should be able to copy and paste the url or click it to see the characters lodestone page.

If you already have your characters lodestone link you should be able to check it that way, usually the search function is the issue (ala searching the name yields no results).

You could also try logging in to the FFXIV Online store (lodestone has link) and add something to your cart, try to select Kira Arias (Raiden) in the character list and check the characters URL if it shows in blue.
If it wont let you select that character at all, you just have to wait, unfortunately.