Hello everyone, I'm new here, I made a new topic and new post, but they have been missed, does anyone know why?
You mean removed...
One reason I can easily think of is that you were advertising something that's related to altcoins in the bitcoin marketplace.
Thanks in advance for your help, (If this one is not lost too, of course) 
I would not be surprised if this topic will also get removed or moved, since thins kind of questions belong to Meta.
Maybe you use the bottom-left link and move it yourself to Meta. It would be much more appropriate.
Thank you so much, I didn't know that(about Meta and altcoins stuff and also, to remove), as I said I'm a newbie.