Hello,
1) Translate the XStore Core plugin (Loco Translate > Plugins > XStore Core plugin) to translate the mentioned strings.
2) If you want to be able to show the media from your business account by hashtag you need to make sure that FB user that you used to generate token and related to your Instagram has all the necessary permissions https://prnt.sc/tclgs2 https://developers.facebook.com/docs/instagram-api/overview# In other cases you’ll be able to show the media from your Instagram account but not the media by hashtag.
Regards