Why do I get the message
The eBay mobile website is no longer supported on this device. Access all your eBay activity from your desktop or a supported Apple, Android or Blackberry mobile device.
I am using a modern Samsung tablet running android 8.1 but when I click on "see the item you purchased" I just get the error.
It makes no difference if I request a desktop site.
I am using the Samsung browser but it does the same in chrome