hello
i'm a error 503 when i'm order the image in admin

AH01067: Failed to read FastCGI header, referer: http://www.*/zp-core/admin-albumsort.php?page=edit&album=equipes-continentales-pro%2F2015%2Fcolombia&tab=sort

104)Connection reset by peer: AH01075: Error dispatching request to :, referer: http://www.*/zp-core/admin-albumsort.php?page=edit&album=equipes-continentales-pro%2F2015%2Fcolombia&tab=sort

POST /zp-core/admin-albumsort.php?page=edit&album=equipes-continentales-pro/2015/colombia&saved&tab=sort HTTP/1.1

have you got an idea ?
thanks

The most probable cause is that your images are too big for the server to process.
See http://www.zenphoto.org/news/problems-with-albums-and-images/

A quick search also learns that it may be caused by several server configurations:

• the PHP APC extension (try switching it off)
• the PHP OPcache extension (try switching it off)
• the PHP memory_limit (try raising the limit)

All these can be found in your php.ini file

php config
memory_limit 256M (Par défaut)
max_execution_time 120 (Par défaut)
max_input_time 60 (Par défaut)
post_max_size 50M (Par défaut)
upload_max_filesize 50M (Par défaut)
opcache.enable on (Par défaut)

In fact during the creation of the site in sub domain I had no worries. To go into production the site I changed the directory of the www by that of the subdomain without having to upload everything and it is since that I have the worries.

Would there be a variable to change in the setting?

If you did run setup after moving the site from the subdomain that would be all to do normally. Otherwise it might be an issue with the PHP fastcgi configuration as freztl suggested. Also as usual check the file permissions as well.

What are the risks if I restart the setup? I will lose all my config?

No, of course not. Re-running setup on an already setup site is not the same as a fresh install.