I have tab s9 ultra but WiFi is connected but no Internet but all the other devices at home has Internet and no issues with the router too. Anu thoughts?
Try going to Settings, connections, more connection settings, private dns and check it it's set to “automatic”. If that doesn't work then you might need to reset the tablet and see if that solves. If after all that it doesn't work then the tablet might be faulty so you'll need to return it to point of purchase or book repair with samsung. https://www.samsung.com/uk/support/repair/