If you have added a post but then can’t find it, you have probably created it but not categorised it as you thought. The default category is ‘Discussion’, which means it’ll appear under the ‘Discussion board’ heading.
If it’s there you know what has happened. Either a) recreate it (cut and paste all the text) categorised correctly and then mail me and ask me to delete the original or b) mail me and ask me to categorise it correctly.
If you’ve checked if your post is uncategorised and still can’t find your post, let me me know including what you want me to do with it if I find it.