When attempting to access my emails on Mozilla Thunderbird i am met with a text box prompting me for my password, when I enter the password it informs me that is it unable to connect to the server. following guides online for similair issues it encourages you to change your authentication to "Oauth2" however this option does not appear for me and all relevant responses on here are in regards to microsoft accounts whilst my account is from a custom domain. Any help would be appreciated as it is a great inconvenience to not have access to my email.