Hey there @TopEX,
Thanks for joining us here in the community! We are thrilled to have you with us.
When it comes to marketplace notifications, it could be a number of things that block that notification. We would want to take a closer look into the finer details of that behavior you are seeing. Without details around that behavior, I am hesitant to just start guessing. Please feel free to include your workflow or error messages you are seeing as one of our fantastic community members may already know a solution! 🙂
Additionally, you can absolutely reach out to our support team at Support@shipstation.com or via live chat with those workflow details and/or any error message you are seeing so we can inspect directly.