Hello, I do use Contao 4.9.30 with Mate Isotope Theme, which is using Isotope eCommerce 2.7.* (according to composer.lock 2.7.4), running on PHP 7.4. The number of available items is not decreased after an order. There are no signs something is not working in the frontend. There are no log entries, too. Thx

It does not make any sense to search in this fields or use them for sorting.

Thank you for this erp,
I receive an error on checkout (Contao 3.5.27 and Isotope 2.4.1. :

Fatal error: Uncaught exception LogicException with message The model instance has been detached and cannot be saved thrown in system/modules/core/library/Contao/Model.php on line 434

#0 system/modules/isotope_simple_erp/classes/SimpleERP.php(56): Contao\Model->save()
#1 system/modules/isotope/library/Isotope/Model/ProductCollection/Order.php(224): numero2\IsotopeSimpleERP\SimpleERP->updateProductCount(Object(Isotope\Model\ProductCollection\Order), Array)
#2 system/modules/isotope/library/Isotope/Model/Payment/Cash.php(38): Isotope\Model\ProductCollection\Order->checkout()
#3 system/modules/isotope/library/Isotope/Module/Checkout.php(165): Isotope\Model\Payment\Cash->processPayment(Object(Isotope\Model\ProductCollection\Order), Object(Isotope\Module\Checkout))
#4 system/modules/core/modules/Module.php(287): Isotope\Module\Checkout->compile()
#5 system/modules/haste/library/Haste/Frontend/AbstractFrontendModule.php(52): Contao\Module->generate()
#6 system/modules/isotope/library/Isotope/Module/Module.php(111): Haste\Frontend\AbstractFrontendModule->generate()
#7 system/modules/isotope/library/Isotope/Module/Checkout.php(109): Isotope\Module\Module->generate()
#8 system/modules/core/elements/ContentModule.php(59): Isotope\Module\Checkout->generate()
#9 system/modules/core/library/Contao/Controller.php(484): Contao\ContentModule->generate()
#10 system/modules/core/modules/ModuleArticle.php(213): Contao\Controller::getContentElement(Object(Contao\ContentModel), 'main')
#11 system/modules/core/modules/Module.php(287): Contao\ModuleArticle->compile()
#12 system/modules/core/modules/ModuleArticle.php(67): Contao\Module->generate()
#13 system/modules/core/library/Contao/Controller.php(417): Contao\ModuleArticle->generate(false)
#14 system/modules/core/library/Contao/Controller.php(277): Contao\Controller::getArticle(Object(Contao\ArticleModel), false, false, 'main')
#15 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule('0', 'main')
#16 system/modules/core/controllers/FrontendIndex.php(285): Contao\PageRegular->generate(Object(Contao\PageModel), true)
#17 index.php(20): Contao\FrontendIndex->run()
#18 {main}
How can I fix it?
Thank you.