Invoice PDF plugin - Error installation

-- HikaShop version -- : latest

Hi Guys,
sorry but i've purchased the plugin. I've tried to install it and, Joomla told me "the plug in it was installated" but if i try to serach it into the Plugin List, i don't see it!

Is it normal?!?

I've tried two times to install it...!

And

In the plugin list it's named "Attach Invoice to the order confirmation e-mail".

You'll find it

• in the HikaShop backend under System -> Configuration - Plugins (not System -> Plugins)
• in Joomla backend -> Extensions -> Plugin Manager (search for "attach")
• in the file structure of your web server under your-domain/plugins/hikashop/attachinvoice

Thanks Lousyfool!

i was serching on PDF

Thanks again
And