First of all, I’ve edited your post. We pardoned your French, but this still is a respectable forum, and language like that is against the community guidelines. Secondly, this respectable place, has over 16.000 files in it. ThemeForest only. So, in lieu of this, let me make an example of why you should download files immediately because they might be deleted ( oh, and PS: this request (to download files as they may be deleted) has been in place for as far as I can remember, and I’m a member here for 5 years now ) .
Authors here have no obligation to keep their files up forever, some authors may decide to leave the marketplaces, or are simply unable to continue to be authors, and they are allowed to delete their files. In that case, updates are no longer released, the author will no longer be around. So, the purpose of having the file there is gone. However, as most files here run perfectly right out of the box with a good documentation behind them, you can still continue to use that file if you’ve downloaded your copy of it! That’s why this request is in place!
There are other cases when an author may have his item deleted due to the fact that it was a blunt copy of another item. If you purchased a blunt copy, you will most likely recieve a refund, but you will NOT have access to the blunt copy file any longer. It wouldn’t be fair to the author of the original file, to you, and you might end up getting a DMCA on the page you’re using the blunt copy.
I hope the above will make you understand why the items are no longer accessible after they are deleted. I’ve reported this post for staff to get in the conversation as well, if they don’t, it means my point is valid and there is nothing to add. Also, if we could keep the French out of the conversation, we would greatly appreciate it and continue to answer your questions!
Also, regarding support, have you tried @envato_support on Twitter as well? Tweet them your ticket number!