An error occurs with the e-mail address I have entered.

Make sure you have entered your e-mail address correctly.

・Make sure you are using standard one-byte characters (you may not use two-byte characters, emoji pictograms or similar).
・Make sure you have included a correct domain name following the "@" mark.
・Make sure the e-mail address is in compliance with RFC global standards. The following are some non-RFC-compliant entry examples:
Contains consecutive periods (example: "[email protected]")
A period directly precedes the "@" mark (example: "[email protected]")
E-mail address starts with a period ("[email protected]")