Hi, Can you explain what's the problem and the solution? I have the same problem with the callback Action method in the payment plugin in NopCommerce 4.0 (Bank redirect User with post method to call back URL and post some values). when I use [HttpPost] routing not found my action and when to remove that, my action is called but form values are null. I test some attributes but routing is not found my action yet. //[HttpPost] //[AutoValidateAntiforgeryToken] //[AdminAntiForgery(true)] public ActionResult CallBack(IFormCollection form) {....