Hi,
Thanks for sharing your requirement here at Freelancer, I will be more than happy to help you,
I understand that you have 2 sites and products are automatically updated on other site but after update in php version it's not updating your site that you want to check and fix, so please allow me to work on it.
I would like to mention that I will take payment only after completion of this job, I will first finish this job and then ask you to award and pay at the same time to maintain trust.
Regards,
Kapil