Joomla! Template Realtor Estate PT - Item Support

I have problems on the installation of the Greek language. Can you help.
I buld my website on XAMPP localhost after some setting on Apache (upload_max_filesize = 1000M; post_max_size = 1000M) I have this messages on joomla

Warning
JInstaller: :Install: Can't find XML setup file.
Error
Unable to find install package

Can you help me on this?
I just find a solution by reading documentation. It was easy.
Sorry am just dummie. thanks anyway!
I make a multilingual site. When I copy menu "Property Listing" this item does not come out in three columns but in one. I've check for parents, they are alright. Any advice on that. Thank you!
Hello again
Unfortunately on warp menu section there is no options about columns. I go: extensions> templates>rdeveloper - Default> menu.... and it shows me only my menus but nothing else.
What can we do in this case?
I tried but without result
Currently the template is on localhost but it will soon be uploaded to the internet. I will inform you
Thanks
Hello!
on mobile version main menu is missing for some reason. Take a look
http://buyingreece.ru/index.php/ru/
Thank you!
Hello
I have problem with menu columns, as I already mentioned in previous posts. I send you details via email about online support (user+pass to aministration zone). Can you check please?
thank you!
Hello I've override the file on my cpanel as you said. Waiting for response. Thank you!
Item Name:
Realtor Estate PT
Sales:
52
Created:
2015-05-30
Updated:
2016-12-05
Item Version:
8.0.1
$35.00
Regular License
This item may be used for a single domain only.
$49.00
Extended License

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