the dogechain.info wallet is based on your browser. the key is encrypted by your password. so the developer of the website cant decrypt your account for you. therefore they cant provide password reset option. this is secure for your dogecoin. however, if you forget the password. there is chance to lose it forever.
if you still hold the wallet ID and have hints for the password. and the 2FA is not on. then there is chance to recover your password.
you can search your email for the wallet ID if you did not write down it. they sent the wallet ID when you open the account on dogechain.info. we will take the rest work.