Custom field translated content not being displayed

-- url of the page with the problem -- : 20.icc-internationalbv.nl/nl/tapijtreini...en/product/artikel-b
-- HikaShop version -- : 4.4.0
-- Joomla version -- : 3.9.24
-- PHP version -- : 7.4.9
-- Browser(s) name and version -- : Chrome 88.0.4324.96

Hello,

I'm sorry to have to bother you, but somehow or the other I can't figure out how to solve my issue. I'm probably doing something wrong, problem is I can't find in which step. So I'm hoping you're willing to lent me a hand with this one...

In the shop all products are duplicated: one in English, one in Dutch. That's not ideal, so I want to skip half of the products and use the translation tool instead. Just like it should be used. All's clear so far.
For design reasons I've added a custom field which loads just normal text content. When I use the translation flags to enter the English and Dutch content, on the English page the content of the custom field will only display the Dutch content. All content of the description box is displayed correctly.

I've tried several steps, i.e. leave the product description and custom field empty and only put content in the translation popup boxes. That's creating an error message which says the translation override file is invalid, all content of the translation box is then being erased. When I'm using content in the products description and custom field box, there is no error message.

I'm aware of the Configuration >> Language >> English and Dutch files. I only don't know how to get the English translation into the custom field area.

Can/will you please help me with this? Thank you very much in advance!
I'm not sure if this is the correct board for this question. Please feel free to skip it to another section of the forum...

Regards,

Ans

Hi Nicolas,

First of all: thank you very much for willing to help me with this! I really appreciate the helping hand

I've enclosed the requested screenshots, please see the attached files. The URL of the test product is:
20.icc-internationalbv.nl/nl/tapijtreini...ssingen/product/test

Please let me know if you'ld rather have login credentials, I can provide them with Super Administrator rights. Just let me know whatever works best for you.

Cordialement,

Ans

I'm sorry, but the URL i've used in my previous post was to the Dutch page. This is the correct URL: 20.icc-internationalbv.nl/en/tapijtreini...ssingen/product/test