Yonke imikhiqizo Isithangami Sokwesekwa

I tried to log in to my Firefox getting started page which used to just load. It now appears to need a log in which I try to do using my Gmail credentials. The password comes up as being incorrect which I know is not the case. If I try to change it I get as far as a Gmail code being sent to my account but when I enter that it says that is incorrect. I have not been able to load the getting started page since.

'Sending of the message failed. Unable to authenticate to Outgoing server (SMTP) mail.btinternet.com. Please check the password and verify the 'Authentication method' in 'Account Settings | Outgoing server (SMTP)'.

Hello

I have been using Thunderbird as my email service and not had this before. Yesterday, I had to change my password for emails with BT. I changed it on Thunderbird too but now I am receiving emails OK on Thunderbird it is refusing to send any for me and shows the above message. I can send OK from my web based BT email but prefer Thunderbird.

I haven't a clue what I need to do to solve this.

Can you please help? Please tell me is very simple steps I'm not very computer savvy.

Thank you