Hi there I just get here and was not going to because your e-commerce advertising on JED Joomla Extension Directory say you are not Joomla 5 compatible. here https://extensions.joomla.org/extension/e-commerce/shopping-cart/joomshopping/
So please if you want to have more customers in future make this update frequently so people see that your extension is in active development and also support latest Joomla 5..
Thks