Thank you for the information :)
As one last option: Could you please go into "permalink" settings:
And click 'save' at the bottom of the page to refresh the permalink's as sometimes this can solve things.
If this does not prove successful i think in your case if you feel comfortable doing so:
Could you please send me a private message via 'chats' with your login details and i will try to have a better look at what the issue may be!
( do not share private information in this thread :)
Let me know and best wishes