Looking for logging into the Invalid Or Password Thunderbird site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Invalid Or Password Thunderbird site. After that you can login as usual with your login credentials.
https://answers.microsoft.com/en-us/outlook_com/forum/all/thunderbird-says-username-or-password-invalid-when/8e225c78-8805-401c-88a2-f169cb50ff02
https://support.mozilla.org/questions/1242498
https://support.mozilla.org/questions/1218197
https://support.mozilla.org/questions/1197187
https://support.mozilla.org/questions/1216906
https://support.mozilla.org/questions/1140116
https://support.mozilla.org/questions/1005512
https://support.mozilla.org/questions/1002201
https://support.mozilla.org/questions/1156366
http://forums.mozillazine.org/viewtopic.php?f=39&t=422216
https://ubuntuforums.org/showthread.php?t=2330549
http://www.inmotionhosting.com/support/email/thunderbird/thunderbird-username-password-wrong