Help with Java Script on Wordpress for Halio Booking Plugin

I need some help with the halio Taxi Booking Plugin. I have several installations of the booking plugin under the same domain cosmostravel.gr. On the Monogram Hotel installation here: [login to view URL] everything works as supposed to. You make all selections and even if you select One Way on the ONE WAY or RETURN drop down it calculates the price w/o a problem. On the Luxembourg installation here : [login to view URL] I have the following problem: 1. When I load the form the TIME field doesn't get the current time as it does on the Monogram istallation. 1. When I make all of my selections and I select One Way on the ONE WAY or RETURN drop down it gets stuck with [login to view URL] error 500!! The problem is that it sets the return_pick_up_time value to just the time. This should not get any value since we selected One Way. All this is managed by the [login to view URL] file inside the /wp-content/plugins/halio/includes/js directory. I am attaching both [login to view URL] from Monogram and Luxembourg installations You will find them inside the [login to view URL] attached file named [login to view URL] and [login to view URL] accordingly. There should be some condition that is not well set into the [login to view URL] file. Thanks