hi how do i find out my password on here as everytime i log in at boyfriends it doesnt ask for a password when i go on a different computer it does

i have mailed the people that runs this caithness.org to see if they could give me a new password and if i could use my own email address on my laptop as its my boyfriends email that was used at first ,it wont let me use my google one.

they must of forgotton to get back to me does anyone know if i can find my password myself or if i can set up a new name on here relating to my google mail or if i can set this to maill me to my google when i get a new message?

what is the reason it has to be talktalk mail just out of curiosity?