No there aren’t any AnsPress extension but you can combine other WP poll plugin with AnsPress easily.

You need to edit comments.php in AnsPress theme. Remove all and add discus action. You can use multiple theme together, there are some plugins which makes this possible but I am sure this will not be a good to use multiple theme in one WP install.

Not sure, I will check this and let you know.

Add this: #ask_form .ap-btn-submit { float: right; }

Yes of course this will work. Yes you can translate to your language. check if your language is already translated if not you can translate using poedit.

Hello Rahul, Really neat and useful feature, thanks to the team!

Yes I know about this, will be fixed soon.