Update 2
Seems the problem was that the owner of the site typed in the registration date with a wrong format (didn’t use the date picker), so these vehicles had an invalid date format and couldn’t be filtered.
So everything working and consider this resolved.
Update on the issue:
I did some testing and when I updated each vehicle (saved the listing), the Min year filter started working for that vehicle.
I’m not sure why this happens from time to time…
But it’s not only the 1st vehicle as I said above.
I’ll do some more testing, but I’m using your plugin on 2 sites at the moment and for no apparent reason the Min year filter breaks.
There seemed to be some compatibility issues with wordpress versions.
I updated WP to 4.3 and updated the database so it seems to all be working now.
So no need to check regarding this issue.
Thank you again for the great plugin!
