Is there an option to disable the hovercard?

In general tab or user tab.

Localization Compatibility Warning

Fred, plsease replace to suggested function, and if that solves the issue then I will update anspress core. I hope you are using some WP plugin to translate AnsPress, in that case it may not work. Casuse I am using prior action load_textdomain. Try poedit.net for translation. Let me know.

can’t ask question

Check in browser console if there is any PHP error or CSS. I cons are missing due to fontawesome conflict, I am updating AnsPress icon right now, to prevent conflict.

Option to select which emails get auto-sent to users

Post edit only notify post author and admin, not every subscribers. I think its better to to keep it on. Tho I will add an option to disable it.

Make answer time clickable with link to it

Its already there in AnsPress, if directly want to link to an answer: http://anspress.io/questions/question/add-yoast-breadcrumb-support/?show_answer=3545#answer_3545

Profile cover image size setting not working

No, its only applied to uploaded image. cover image is cropped to that size. Cover image occupy all space. You can modify cover size using CSS.

Can it be set up so that only admin/moderators can answer the questions??

Issue has been solved please get master zip from Github.

Undefined index: user_id in notifcation

Will be fixed soon.