Make sure that you put your .po .mo files in /wp-content/languages/themes/ with correct names, for example, royal-tr_TR.po, royal-tr_TR.mo.
Likely you simply need to synchronize translation files.
Button Sync (Loco Translate plugin http://prntscr.com/glemdq) allows you to synchronize your translation file with updated pot file. It means if we made any changes in template files that may affect transaltion or we added new string for the translation and you updated theme you need to synchronize your translation with updated files. Only after synchronization you’ll be able to translate new strings or strings that were changed.
Let us know if you need any further assistance.