permalinks (problem 1) log-in password (prob.2)

Hi,
recently I moved the directory of my website from a subdomain to the main one. Since then I have not been able to keep my custom permalinks working.
Everything is working with default permalinks but as soon as i choose the custom ones I can’t reach any page.
Any suggestion?

Moreover every time that I log-in I have to reset my password, again, any suggestion?

Thank you