Hikashop Google Products Plugin generates empty file

-- HikaShop version -- : 5.0.0
-- Joomla version -- : 4.4.0
-- PHP version -- : 8.1
-- Browser(s) name and version -- : All
-- Error-message(debug-mod must be tuned on) -- : None

I configured and activated the Hikashop Google Products Plugin on my site. However, if I trigger the download with the button at the bottom, only an empty xml file is generated with no products included. Only the channel title and description are included.
I am probably missing something?

Note that on the frontend, I only use the Hikashop add to cart button. The productpages are Joomla articles styled with the Yootheme Pro Builder, don't know if that could be an issue. The products refer to the Joomla page using the canonical URL.

See attached a screenshot of the plugin parameters

I guess this should work better?

tinyurl.com/ytjstynx

Note that I also tested this on another site I have, and there it works.... Seems something specific for this site?

Hi Philippe, I think you misread my question. My problem right now is that simply no content is being written to the xml file. It only generates the following code:

<?xml version="1.0" encoding="UTF-8" ?>
<rss version="2.0" xmlns:g="http://base.google.com/ns/1.0">
	<channel>
		<title><![CDATA[ Xxxxxxxx ]]></title>
		<description><![CDATA[ Xxxxxxxxxxxproduct feed ]]></description>
		<link><![CDATA[ https://xxxxxx.nl/ ]]></link>

</channel>
</rss>

The products have stock, no discount or anything else I could think of. The shop works fine otherwise and I am selling products.
So, if you could take a look at the backend, yes please.
It's been a long time since I needed support, I cannot see where I can supply login credentials, can you let me know?

I just sent you login credentials.

I supplied the credentails.

Do you have any news on this matter?
Thanks.

Ah, perfect. It is just a shop with a few products, so there will never be a need to categorize here.
Thanks for checking this out.
Let me know once you finished all your investigations so I can disable the support accounts for security reasons.

I am still having one issue unfortunately. It concerns the Gtin feld.

I configured a custom product field called "gtin" and filled the products with the Gtins. Then I used the column name in the plugin so that the Gtin should be used in the xml file. Hoever, the Gtin is not written, while everything else now looks fine. I don't know if this could be related to the bug you fixed last week?
Find here screenshots of my setup in case I made a mistake:

Plugin setup: tinyurl.com/ysjozzxm
Custom field setup : tinyurl.com/yoxnpvce
Product setup: tinyurl.com/yu7vtyla

I just re-enabled the support user I supplied credentials for last week just in case you want to check the backend of the site.

Hi Nicholas, I actually already had set the "identifier exists" to "true", but apparently the plugin only adds Gtins when the value is written in caps: "TRUE". Indeed doing so creates the Gtins.
Actually, I try to closely follow the Merchant Center recommendations, and at support.google.com/merchants/answer/6324478?hl=en it is advised to specify the value in non-caps.
Because the plugin only allows you to enter the value in caps, in the XML file, the value for <g:identifier_exists> is now also written in caps. Not sure if this could be an issue, but I think, allowing to set the value in non-caps would be better.
But for now, I have an xml-file with all values needed filled in.