Look like files not properly synced with github. Anspress_Actions renamed to Anspress_Hooks.
I seen that already, we will check and let you know. DO NOT POST DUPLICATE POSTS, even though if no one replied. I read every new question posted in our site, so I seen your previous posts too and of course will check if that is a bug. Posting one thing again and again will bother us and will delay the development process.
This issue has been fixed and commit has been made to GitHub. Also releasing a new version in WP repository.
Here is the filter for overriding AnsPress use link, add this in your theme functions.php https://gist.github.com/rahularyan/fd945142f53557c9d9bf
You mean: Does ANSPRESSS work well with any particular Membership product? I have improved AnsPress user roles yesterday (in github repo) and it will work with any membership plugin. Now AnsPress will grand access based on capabilities. So you can easily mange user and roles permission.
This may be due to your theme. You can hide avatar using this css https://gist.github.com/rahularyan/5a3ae606620ebba805f4
Combine with whom? AnsPress notification to BP or BP to AnsPress ? If you want AnsPress notification in BP then its done by default, but BP notification cannot be shown in AnsPress.
There is ask form widget you can use it, if you wish to show ask form in other places. There is status button below post (only admin) AnsPress have only one shortcode [anspress], for more information about shortcode read docs.