first of all i’d suggest you update/upgrade your network as per notice in your admin

in any case, there appears/might be a namespace collision with another plugin somewhere.
try updating the cloudprint plugin to the latest version (3.5.2) which I just made available (might take a few minutes to show up in your dashboard/plugin admin)

Let me know if that helps or indeed if you still have the same issue after updating

if you want to use the default template, use the filter
wppizza_filter_html_email_style to set the image

and set
$htmlEmailStyle['mailHeaderBackgroundImage']

to something like

background:url('http://www.domain.com/logo.png') 10px 10px no-repeat;

so – in full :

add_filter('wppizza_filter_html_email_style', 'my_prefix_email_style');
function my_prefix_email_style($htmlEmailStyle){
 $htmlEmailStyle['mailHeaderBackgroundImage'] = "background:url('http://www.domain.com/logo.png') 10px 10px no-repeat;";
 return $htmlEmailStyle;
}

see also: https://support.wp-pizza.com/topic/html-email-editing/

footer text as above

>Is that possible?
no, sorry

all you can do (which would at least add some linebreaks per group) is enable
wppizza->ingredients : options: Display ingredient groups in emails

(assuming your have different groups for different sets of ingredients/topping to start off with of course)

>Should we edit the file located here wp-content/plugins/wppizza/templates/wppizza-order-print.php?
NO. NEVER edit corefiles. see the faq’s how to edit things

> Because when we are trying to edit wppizza-order-print.php
i assume you are using the/a drag and drop template in wppizza->templates. wppizza-order-print.php has nothing to do with those

first thing to do/try:
– enable debug https://support.wp-pizza.com/topic/how-to-enable-debug-in-wordpress/
– check the debug.log and your server error logs to see what the 500 error is about (it can absolutely be anything)
– de-activate the cloudprint plugin and see if the 500 error goes away (if you have no access to the backend because of the 500 and assuming you checked your error logs to make sure it’s caused by the cloudprint plugin to start off with, delete the plugin directory using ftp, you can always reinstall it)

let me know what you find

PS: when you say “All of sudden, something happened and printer stopped printing the orders.” What changed ?

your site has a bunch of other problems. first of all i’d suggest you fix those.
to do that :
a) de-activate any caching plugin
b) enable debug like so https://support.wp-pizza.com/topic/how-to-enable-debug-in-wordpress/
and check the logs
c) i would also recommend you have a look here https://support.wp-pizza.com/twentytwelve/our-menu/user/ for some toppings/ingredients examples , as there are also instructions/screenshots as to how these are set up

@mps1
fair enough.
problem is, your screenshot is showing things that apparently do not work the way you have it setup. The added ingredients in your screenshot should be the other way round (i.e “house salad” first, the same order as in the group underneath) – unless these screenshots are made with different settings

then again, according to your own admission (https://support.wp-pizza.com/topic/ingredients-sorting/#post-14974) you have some other issues anyway

furthermore, it (the 2nd screenshot) does not really address the question regarding how to display the toppings groups in the emails/order history

>Is there a way to display the ingredients grouped in the same way the ingredients are grouped?
wppizza->ingredients : options ->”Display ingredient groups in emails”

however, playing around with this for a moment, it appears that – if you enable this option – the ingredients selected in each group (in the emails etc) are sorted alphabetically again and do not obey the custom sort order.

i’ll have to look into that