A device can support 4K output while a specific stream is only available at a lower resolution.
Mistake: relying on a headline
Treating a marketing 8K name as proof every programme is delivered in 8K. Read the supplier’s plan details and the fine print that applies to your chosen app and account.
Mistake: changing too much at once
Compare the stream label, TV input mode and available bandwidth. If a test fails, change one factor: a second channel, then the player, then the network, while noting the result.
Better habit
A device can support 4K output while a specific stream is only available at a lower resolution. Keep a brief record of the actual order and any support guidance so renewals and future troubleshooting are easier.
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.