My email was returned by ISP. The email account is valid and active, but now I cannot manage or logon to my Sync account への最近の回答https://support.mozilla.org/ja/questions/11935452017-12-07T08:27:26-08:00Anything helpful here?
https://support.mozilla.org/en-US/kb/forum-response-firefox-sync-verificatio2017-12-07T08:27:26-08:00cor-elhttps://support.mozilla.org/ja/questions/1193545#answer-1046759<p>Anything helpful here?
</p>
<ul><li><a href="https://support.mozilla.org/en-US/kb/forum-response-firefox-sync-verification-email-faq" rel="nofollow">https://support.mozilla.org/en-US/kb/forum-response-firefox-sync-verification-email-faq</a>
</li></ul>