Keep selected values of the search form when clicking back - Houzez theme

I would appreciate your help with an issue related to the Houzez theme. Theme documentation can be found at [login to view URL] Changelog can be found at [login to view URL] This is the URL that you will be working at [login to view URL] (popup login credentials are pqh1fine and pqh1fine). If you go to the page [login to view URL], if the user selects one filter e.g. All Cities > Athens he will see only the 6 related results which is correct. You can see that the "Athens" city selected in the dropdown. If I click to view one of the listings e.g. [login to view URL] and then I click the "Back" button, the filters are lost (not saved) / reset to the default values. I would like to have the "Athens" selected in the dropdown. It should work for the other dropdown menus as well. You can check the demo at [login to view URL] and you will see that thanks to the GET parameters, the "For Rent" is saved even after selecting a listing and going back BUT if you also select 2 for Bedrooms and then go to [login to view URL], if you go back, the 2 is not saved in the dropdown. Is there a way to "remember" the selected filter values e.g. by refreshing the page when any search field is selected so that the URL adds a GET parameter? Needless to say, if you can find another solution, it is also welcome. Please let me know the cost and timeframe. Thanks in advance. PS. You can see a demo of the theme at [login to view URL] which works like charm and does what I want to, so it should be feasible.