where do you have your software installed?
in root or subfolder?
what is your cron command?

Hi i have been having problems with the new up update  of ACTIVITY NOTIFICATIONS | PLUGIN. i keep getting this message for the corn jobs in my email {Could not open input file: /home/i44f7880/public_html/ow_cron/run.php} is there a way this can be fixed ? or do you have a older Version of this plugin from 03-02-2016 that version worked perfectly. 

it is installed in my subfolder public_html by the admin control panel .

this is the cron commanded used /home/i44f7880/public_html/ow_cron/run.php

as you can see in the picture attached.

I'm sorry but the picture is too small, I can't see anything in there.

As to the cron issue, you need t indicate a subfolder where the software is installed too.
See our manual please: https://wiki.oxwall.com/install:cron

I’m having problems with the push notifications plugin

Do you have a updated version of your push notification plugin? If so can you send me the link to download it ? I paid for your push notification plugin two times trying to install it but it keep saying I need your updated version and it won’t install. Can you help with this?