@Andrew137 where TVs refuse to pick up new wifi details rebooting oftern helps. To do that unplug or switch off the power and keep it off unitil the power led goes out leave it a further 20 seconds then re-start the TV and hopefully it will accept the new network details.
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65inch Sky Glass, 3 Sky Streaming Pucks, Sky Ultrafast + and Sky SR213(white Wifi Max hub) main Wifi from 3 TP-Link Deco M4 units in access point mode
