Need wordpress expert to help me fix site problem

Avg Bid (USD)
Project Budget (USD)
$30 - $35

Project Description:
I run a vote exchange website called Vote requests

This site is build using custom post type "contest" in wordpress and many custom fields. The posts are ordered by using a custom field named "Top Contest Order". There is something strange in the site currently that is for only some users around 10%. When they add contest only this custom field is not added and as per ordering functionality if this is not added then that contest will not be displayed. However this contest displayed in admin but not displayed in ordering because of this custom field entry and strange thing is its only for some users.

I'm working with my developer to fix this issue but he has no idea what the problem is, I would like the worker to diagnose the problem give me instructions and I will pass it on to my developer once the problem is resolved payment will be sent right away, I will send any information screen shots etc needed to diagnose the issue. Only wordpress experts please. I'll be happy to explain in further detail if you have any questions. Thank you

I will also provide code if needed

Skills required:
MySQL, PHP, Software Architecture, Software Testing, Web Hosting, Website Management, Website Testing
About the employer:
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