It looks like you have some JavaScript error on site. While using Chrome press Ctrl + Shift + i it will open the developer console and will show the error message, you can copy it and paste here is should be able to help then.
Uncaught Error: autoNumeric will not function properly when the decimal character aDec: ‘.’ and thousand separator aSep: ‘.’ are the same character
at Function.error (jquery.js?ver=1.12.4-wp:2)
at HTMLInputElement.<anonymous> (auto-numeric.js?ver=1:2245)
at Function.each (jquery.js?ver=1.12.4-wp:2)
at a.fn.init.each (jquery.js?ver=1.12.4-wp:2)
at a.fn.init.init (auto-numeric.js?ver=1:2140)
at a.fn.init.$.fn.autoNumeric (auto-numeric.js?ver=1:2578)
at HTMLDocument.<anonymous> (adverts-frontend.js?ver=1.3.2:150)
at i (jquery.js?ver=1.12.4-wp:2)
at Object.fireWith [as resolveWith] (jquery.js?ver=1.12.4-wp:2)
at Function.ready (jquery.js?ver=1.12.4-wp:2)
Go to wp-admin / Classifieds / Options / Core panel and make sure that fields “Decimal Separator” and “Thousands Separator” are using a different character(s).
thank you very much for your help I have solved
