1) What Max input vars value you can see in XStore Dashboard > System Requirements? Try to set 3000 (your hosting provider can help you with this) and then check the Multiple headers.
If this doesn’t help, provide us with temporary wp-admin and FTP access.
2) Please create a new separate topic – http://prntscr.com/r7fewhhttps://www.8theme.com/forums/xstore-wordpress-support-forum/ to prevent a mess in this one. Describe the problem with the WPML in more detail. Thanks in advance.
