Hello,
Why you ignored a part of my answer https://gyazo.com/f07a23dec8f993fe476c95ab8449b113 ?
I do not see files of XStore and XStore Core translation – http://prntscr.com/10yz784 https://gyazo.com/91c8561d5a6d41ac421f7b59e20fc4b7 Do you have a backup? Place translation files of XStore theme into /wp-content/languages/themes/ folder via FTP, files of plugins – wp-content/languages/plugins folder. If files were placed into an incorrect folder before the update it can be reason for losing translation.
Regards















