I will update or
downgrade your wordpress version that you need. also if you
need to update your wordpress theme version I will do that too.
let me tell details about this :
wordpress has version 4.5.3 . if you are using wordpress latest version
you may have problem with visual composer or page builder or fusion
builder or any thing like that . Or there is not any update button in wordpress dashboard.
Contact me and tel me your site issue. I will keep a backup in your server before doing the task.