Display {loadmodule id} instead of the module itself

-- url of the page with the problem -- : duchampdrive.fr
-- HikaShop version -- : 4.2.3
-- Joomla version -- : 3.9.16
-- PHP version -- : 7.3.16
-- Browser(s) name and version -- : chrome
-- Error-message(debug-mod must be tuned on) -- : Display {loadmodule id} instead of the module itself

Dear,

I would like to include a module in the description of my shipping method, but instead to display the content of the module it displays '{loadmodule 176}'. This module displays correctly when I include {loadmodule 176} in an article in Joomla, it seems it does not work when inserted in hikashop.
See attached a printscreen of the displayed page.

Thank you in advance for your answer.
Martial