I want to thank Deian Motov for all the good support he has given.
There was a bug in the zoo and he has fixed.
When I had a problem with large files joomla only so up to 2 gb and download a small part. that he also fixed.
Now there are two small problems: 1 if you press download button it takes 3 min before you can download, someone has a possible fix so i mailded to Deian Motov hope he can fix it. and after the adjustment problem with zoo a small yet important problem if you buy something and you did the paidment you come back to the site to download the file only stays stuck on the refresh page you can not download your purchased taget.
Further support is amazing.
Alex