1) Always post the ACTUAL command line used (or log file line two) so we know
what the site is, what ALL your settings are, etc.
2) Always post the URLs you're not getting and from what URL it is
referenced.
3) Always post anything USEFUL from the log file.
4) If you want everything use the near flag (get non-html files related) not
filters.
5) I always run with A) No External Pages so I know where the mirror ends.
With B) browser ID=msie 6 pulldown as some sites don't like a HTT one. With C)
Attempt to detect all links (for JS/CSS.) With D) Timeout=60, retry=9 to avoid
temporary network interruptions from deleting files.

> anymore, but still hosted on server. I can reach
> them using a direct link like:
> <http://www.website.com/pictures/2013_june/1.jpg>
> <http://www.website.com/pictures/2013_june/2.jpg>
> ...and so on
> 
> Any idea how to download the whole remote folder

There is no magic here. If your browser can't show the remote directory -
neither can HTT.
Unless you have the URLs (by reading the directory, by having them saved, or
by spidering the site) you can only guess: Number sequences: How to mirror
only files/URLs using a certain ID/number range -
<http://httrack.kauler.com/help/URL_number_sequences>