When I set up my accounts, I get a rejection saying that my password or email account is incorrect

I have tried numerous times to enter an account into thunderbird with a password fail notification each time. It is the correct password as it works on my other mail accounts. also the correct email account is entered with the correct spelling etc. There is also a box beneath the password that says "log in" I have no idea what they mean by this. I have not encountered this before. I am using an HP Omni Book Ultra 14inch. running Windows 11. I have installed Thunderbird on several other devices without this problem.