Hi you have shared your credentials in private reply of someone else's topic.
Note that private replies on the topic made by any one can be seen by vibethemes staff (moderators) and by the creator of that topic .
Therefore please change your admin and ftp credentials .
Secondly about the issue .Well I was able to load the product edit page with french language with vibe customtypes activated on your website : http://prntscr.com/o9v4ym
The issue seems to be of memory limit .you memory limit is just 40 Mb.The wordfence plugin is taking much memory and hence the edit page is not loading somehow .
I deactivated wordfence plugin and edit product page appeared to me :
We recommend memory limit to be 128 MB .Please contact webshost on this