Нашел такой ответ:
Due to the way the DNS protocol itself works, 2048-bit DKIM records need to be split across multiple records within a resource record set. As such, you will need to split the text across multiple records within the same RRSet. If you're using the console, you will simply enter the text on multiple lines when editing the resource record set as such:
"Sample Text Entries"
"Enclose entries in quotation marks"
Жду пока обновится ДНС проверить правильно или нет