Email address, appending characteristic

Hi,

You should activate that append option so that you get the name with the characteristic value everywhere.
Then, you should add the CSS below to hide the characteristic value on the product page:
.hikashop_product_name_main .hikashop_product_variant_subname{
display:none;
}

For the emails, you should edit them via the menu System->Emails and change the email address there.

No, the semicolon is added directly in the core and cannot be removed easily unless you change a core file of HikaShop.
You would need to edit the file administrator/components/com_hikashop/classes/product.php and change the line:

$variant->product_name = $variant->main_product_name.': <span class="hikashop_product_variant_subname">'.$variant->characteristics_text.'</span>';

For the user email on the admin email you can do like that:
www.hikashop.com/en/support/forum/4-how-...n-invoice.html#29578

In next version, the semicolon will be moved to the span so that it will be removed when you hide that CSS class.

For the email address in the admin email, I already gave you the solution:
www.hikashop.com/en/support/forum/4-how-...n-invoice.html#29578

If the emails are not going out, you should first check if your other emails are working on your website. If yes, then it must come from the settings in the tab Email of the configuration of HikaShop. If no, then the problem comes from the main email settings in the configuration of Joomla.
The problem could also come from a modification you did in the emails if you did any. In that case, you can always revert your modifications via the trash icon on the Emails listing.

Please try with that code:
www.hikashop.com/support/forum/4-how-to/...n.html?lang=en#25386

There is a typo in the code of that user.
It should be hikashop_get and not hiakshop_get.
Try with the same code but changing that.

So does it work now ?

Do you get another error ?

The error message in the capture you made was "Fatal error: call to undefined function hiakshop_get...". If you corrected the typo, it's not possible that you get the same error message since the typo was the cause of the error message.

I can see the typo in your screenshot...
Anyway, if you don't have the typo and still the error message, maybe it's because you're using an old version of HikaShop ?
In that case, you should use hikashop::get instead of hikashop_get.