A device can support 4K output while a specific stream is only available at a lower resolution.
Ask about compatibility
“Which player and login method are supported on my exact device for HD and 4K streaming?” A device can support 4K output while a specific stream is only available at a lower resolution.
Ask for a repeatable answer
“Can you confirm the current terms and a way to test this case?” Compare the stream label, TV input mode and available bandwidth.
Ask what changes
“If I renew or switch devices, what happens to the account, app fee and guide?” Treating a marketing 8K name as proof every programme is delivered in 8K. Keep the answer with the order record.
What to do next
Open the relevant brand page and check the original supplier information before ordering. For a technical issue, write down the device, player, connection and one reproducible example. For a price question, ask for the full charge in the currency you will pay.