Ignoring dates chosen with date picker

Great plugin,
but I have some problems with dates chosen with date picker.
In mail I get correct dates for check in and check out, but in WP control panel I have today date for both dates ??

This is my contact form 7 data:

<p>Tvoje ime (obvezno)
[text* your-name] </p>

<p>Tvoj email (obvezno)
[email* your-email] </p>

<p>Apartman
[booking] </p>

<p>Checkin Date (obvezno)
[date* checkin] </p>

<p>Checkout Date (obvezno)
[date* checkout] </p>

<p>Tvoja poruka
[textarea your-message] </p>

<p>[submit “Po?alji”]</p>

And my post data:

[availbooking name=”Apartman Trogir”]

[contact-form-7 id=”44″ title=”Apartman Trogir”]

Thanks in advance, Drazen

https://www.ads-software.com/plugins/jm-avail-booking/