Hi, no idea where i can change the currency ?

first, you must go to "currency manager" (left menu, at the bottom) and ACTIVATE the currentcy CHF.

then, in OPTIONS, you can set this currently as default.

Hello,

sorry, but i can't find the left menu ? See screenshot.

I have find a way (because no menu...), i have search in the source code to find the link : index.php?option=com_invoices&controller=currencies
And now i have published my currency. But dont understand why i dont have this menu ?

the menu is displayed on the left side. if you don't see the menu maybe it's because the system plugin is not installed? can you check?

Yes, the plugin is published. I have the same issue in my second site.
I have try to uninstall and re-install the plugin, but no left menu.

here's a screenshot

hello,
with Chrome developer console, can you check if you see this element in the code? "invoiceManagerMenu" (see sreenshot)

Hello,
yes, if i select it, and uncheck the box with the left attribute, i see it. So i thing it is too left...

what I don't understand is why you see it like this and I don't.. it makes no sense to me..

can you then delete this from the CSS file?

What do you want i delete ?

this "left" property on the ".panel-slide" that you just pointed out on the CSS file.

Hello,
if i delete them, i have the menu open in front of the invoices...

Another thing, if i look your screenshot where i see the menu semi open, if i chez in the console, i dont see the menu "semi open". See screenshot. It is the same but the "semiOpen" string is missing.

If i add it manually in the Firefox console, the menu appear !

It is very strange. It seem the class layout is not charged correctly.