Unfortunately we do not provide live support. Please post your question here with more details.

https://support.mozilla.org/en-US/kb/thunderbird-faq "Thunderbird does not provide direct support via email, fax, chat, phone, remote, nor paid services, so be wary of offers of paid support, and also please report scams that you think are suspicious. Instead we rely on our volunteer community to help users. We hope that you, a Thunderbird user, will become a Thunderbird community member. (See below on how to help.) "

Please share whatever you're seeing, such as error messages. We need something to go on in order to assist.