products import

Hi,

You can do that via the menu Products->Import when you're in HikaShop.

No. That menu is available in all the editions of HikaShop.

When does that happen ? When you import the CSV ?
In that case, it usually means that the CSV is too big and the import eat up too much resources for the restrictions put in place for your hosting.
You should split the CSV in several smaller CSVs and try again.
If that still doesn't solve the problem, it could means that your CSV is not valid and it breaks the import. You could try to activate the debug mode in the joomla configuration and try again. That might display an error message with more information about the problem.