Conditions Required to Apply for a World Transfer
To apply for a World transfer, an existing playable character must be associated with a player's service account. As long as a player has at least one usable character, a destination World may be chosen for all characters in the service account, including characters that have not yet been paid for.
* To view and change subscription details, visit the Square Enix Account Management System and click Select Service on the left-hand menu, and then select FINAL FANTASY XIV.
ALTS OF ACTIVE ACCOUNTS.
Inactive characters are not taking up server space.
"quote from Yoshi...
Inactive characters/non-subscribers are also counted, but they are not factored into the maximum limit of active characters allocated to each server. "
My god... lol! Keep trying.