It seems previously I provide the wrong file version. I’m sorry for that. Please try to replace the content of this file below:
1. wp-content/plugins/jnews-instagram/class.jnews-instagram.php with this one https://pastebin.com/2FXXT6PA
2. wp-content/plugins/jnews-instagram/jnews-instagram.phpp with this one https://pastebin.com/iYLz604U
Let me know if it’s work or not on your side.