When using external user integration (such as WordPress) the wall navigation should not appear, neither should much of the other profile information. You can fix the wall link by removing the appropriate item in function qa_user_sub_navigation(...) in qa-app-format.php. This will be fixed in Q2A 1.6.2.
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask here, in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
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April 20, 2021: Q2A 1.8.6 released!