Been using shipstation for a year. All my woocommerce shipments used to automatically notify marketplace after the shipment was scanned in by UPS. Now, this rarely happens as of a month or two ago. And when it does, there is no rhyme or reason. I ALWAYS and by default have checked "notify marketplace" when creating the shipment. What gives?
Thanks for reaching out and for being a part of our community. Have you been able to reach out to our support team about this issue? If not, I might recommend opening a ticket so they can look into this with you.
-Erin: Your Friendly Neighborhood ShipStation Community Manager