I'm going to give you access to my website and FTP. All my file that have multi-languege are working as they are with V 2.18 so you can do an example with categories if you want . I'll let you the info below. I will attach queryojb 2.22 so you can test it . I have 2.18 in my live site because with 2.22 nothing happen. One thing I did was to rename one of the categories to name 2 for update and insert one for test and it work then I upload V2.22 and I did again but this time it doesn't work.