Unfortunately things can disappear from sight quickly.
You can find your own posts by going to your workspace or by clicking on "My Forum Posts" in the right hand corner under the banner. I use that method and it works fine for me.
I'm going to hunt up your original post and see if there is anything I can do to help.
Incidentally- a way to keep your post "on the front page" is to apply something we call a bump. Open your post, click Edit Post, note that you have edited to bring it back to the top. You can generally also find yourself on the day of your post by going to "New Questions". After that, you have a chance of finding it in "Hot Questions".
Finally- you can always ask for help. There is a link at the top of the page- orange dot that says FAQ. Or post a question.
Also, it is a courtesy to mark someone as helpful when they are. Mycroft should get a thumbs up from you.
Now let me go look for the original post and see if I can't help.
Good Luck!