We may not be able to resolve the issue of undelivered e-mails by ourselves.
Please check the following.

■Blocking due to the setting of specified domain reception
Please make settings so that you can receive emails from the "plusmember.jp" and "dxteen.com" domains.
For confirmation and setting methods, please contact the provider of your email address (each mobile phone company/shop).

★For customers using carrier addresses
Each mobile company has a high level of anti-spam measures as standard, and as a result, there are many cases where emails do not arrive.
Even if you do not have any idea about spam mail countermeasures, please be sure to check and set them.

■ Those who use docomo address
For information on how to check emails that have been identified as spam, please refer to the following website.
»If you are using the iPhone standard email app
»For those using the docomo mail app for AndroidTM smartphones
*Move to docomo site

If you are using an au address (ezweb.ne.jp / au.com)
If you set "Spoofing restrictions" to "High", your email may be blocked.
Set it to "Medium" or lower, or cancel the setting.

■Those who use SoftBank address (softbank.ne.jp / i.softbank.jp)
If your spam filter is set to "Strong", your email may be blocked.
Set to "Normal" or "OFF".

■ Those who use icloud, free address (gmail/yahoo), PC address
It may be automatically sorted into the "spam folder" or "promotion tab".
Please check your inbox as well.

■Is the capacity exceeded?
You may not be able to receive emails if your mailbox is over capacity or your smartphone is over capacity.

■The email address contains a string of characters whose use is restricted.
Examples) A series of dots (.....), a series of symbols (_-_), a dot or symbol (.@) before the at sign, a symbol (-abc) at the beginning, etc.
If you are using an e-mail address that includes the relevant character string, please register again with a different e-mail address.

The following e-mail addresses cannot be used in principle because they do not comply with the RFC (Request for Comments), a globally common Internet communication standard.

<E-mail address not compliant with RFC>
1. When symbols other than "-", "_", ".", "+", "?", and "/" are included
2. When symbols are used consecutively for two or more characters
3. If the symbol is used at the beginning and end (just before @)
Four. If the part before @ is 64 characters or more
Five. If the entire email address is longer than 256 characters

■Others
・Please change the settings so that you can receive emails from PCs and emails with URLs.
・When sending a blank e-mail instead of entering the address manually, please do not include your auto-signature in the text or title.
・Depending on the mailer or e-mail app you are using, related e-mails may be displayed together as a thread.

*As a general rule, emails cannot be resent. Please note.