Problem with pagination for a language

Web site: piemontehouses.com
Problem with pagination of the complete list of properties .

In the complete list of properties (and only in this case - visit the link above), if I click on one of the following links at the bottom of the page, there is no problem, but if I then click on any one (the third choice), I receive the page not found error. I then discovered that the problem occurs because the pagination links are wrong on the second page visited. This problem occur only with others languanges, except for the principal. Thanks everyone for the help.

i think i have the same issue with the pagination.
first page i can see the second page i get the error 404.
i add one more property and is working well.
But some times is working and some not still i searching why is happen.
I think have to do something with refresh from the page.
Is the same issue with the login.
kato.gr/index.php/el/katigories/apartment

Hi Konstantinos,
Please check your Page Navigation again, because i don't see any problems with it.
Thanks
Dam

I have found the cause but not the solution. The problem is caused by Joomla URL SEF. If I disable it then pagination works...

thanks alot now is working

Yes, but i didn't change in on your site.

yes you have right. doesn't work well.
If i add one property is working but after some time i get the same error.
i will tell you how to check it.
home page kato.gr then Explorer by Categories /Apartment then start to click
paging 1 2 3 4 5 then click the back button from chrome and crashing.
check here