Its because users page slug. change it to user or something else different then users slug cause it is used in users page.
<a class="btn btn-ask btn-default btn-lg" href="http://localhost/askbug/questions/ask/">Ask question</a> You can simply edit header.php to edit this manually.
Add this to your style.css: body ul ul#ap-notification-dropdown li { width: auto; }
You can simply allow user to upload in AnsPress options -> permission
As you are using AnsPress RC version, hence copy anspress folder from askbug to askbug-child
You can try to changing this: https://github.com/anspress/anspress/blob/master/includes/functions.php#L215