Posted Listings do not show or get saved

Hi,

Since the last update there’s an issue going around with my site. Members are posting their listings but aren’t getting through, it goes to preview before publish and then it’s redirecting back to home page after pressing publish. It was working fine before and nothing else has been changed.

I’ve tried:
– Deactivating everything and reactivating
– Disable plugins one by one & checking
– Checked settings (they have permission to post from Fron-end)
– Cloning an old post with new title. It showed up in listings. (From admin acc)
– There’s no active caching plugin
–

Here’s what I got installed & active from Geo Directory

GeoDirectory Version 1.6.5
GeoDirectory Advance Search Filters Version 1.4.1
GeoDirectory Ajax Duplicate Alert Version 1.1.5
GeoDirectory BuddyPress Integration Version 1.1.2
GeoDirectory Custom Google Maps Version 1.0.7
GeoDirectory Custom Post Types Version 1.2.9
GeoDirectory Events Version 1.3.7
GeoDirectory Lists Version 0.0.4
GeoDirectory Location Manager Version 1.4.9
GeoDirectory Marker Cluster Version 1.2.6

Everything else is up-to-date.

PHP Version: 5.6.24
MySQL Version: 5.6.28-76.1-log

Website is using SSL with KLEO theme.

I have tried posting from user accounts and admin accounts, the issue remains the same, it takes you to the preview screen and upon publishing it shows nothing, just redirect to home page and nothing is in the back-end.

Any actionable help would be appreciated!