@Dkf, there can be not only posts in the approval queue, but also users, threads, etc. Please provide the result of this request to determine if there is anything other than posts:
SQL:
SELECT DISTINCT content_type FROM xf_approval_queue
In any case, you can clear the
xf_approval_queue
table to clear the approval queue:
SQL:
TRUNCATE xf_approval_queue
However, if there was something other than posts in the approval queue, additional manipulations may be required.