Seats not showing as booked and counting not updating

Hello Support,
I am using this plugin and seems working fine till now. I tried with testing booking in bus it worked but when i come to same date search and book the already selected seats it gives error.

Instead of this I want seat should not be selected or clickable or some different color.

Another query, from plugin backend settings, there are option to add images for booked, available seats that also not shows seat book.

Hope you get my concern and reply soon.