Add-on authors are not obligated to make their add-ons work in beta. Some or all of your add-ons may not work. Or if they do work today, they may not work tomorrow. Consult the <a href="https://support.mozilla.org/kb/thunderbird-add-ons-frequently-asked-questions#w_what-if-my-add-on-is-broken">Add-ons FAQ</a> if you have difficulty. 
Gehigarrien egileak ez daude behartuta beren gehigarriak betan funtzionatzera. Zure gehigarri batzuek edo guztiek baliteke ez ibiltzea. Edo gaur lan egiten badute, agian bihar ez dute lanik egingo. Kontsultatu <a href="https://support.mozilla.org/kb/thunderbird-add-ons-frequently-asked-questions#w_what-if-my-add-on-is-broken">gehigerrien ohiko galderak</a> zailtasunik baduzu.