Older Post option is not working in mobile version

I am using islemag them since last 10 days. Theme is perfect for my content as well as google seo. But when i switch my home page to any caterogy page and scroll to bottom of category page then older post option/function is not working in mobile phone. Desktop version is working fine but in mobile version permalink is disabled. One more issue i am facing here that is no any kind of page nevi plugin working into it. I tried to install wp page navi plugin but it is not showing anything on front end. Anyone here to help me.

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