I've noticed an issue on TalkTalk Wi-Fi Hub which started about a week ago. Devices that are connected to the Wi-Fi broadcasted from the router maintain connection but lose access to the TCP/IP network as I am unable to ping any device from the affected client, even the router itself. If I disconnect from the Wi-Fi and then connect again, access to the TCP/IP network is restored.
The issue affects multiple devices (observed on two laptops and a phone) but doesn't affect them simultaneously, other devices are fine while one has an issue. It only happens a couple of times each day. The phone and one laptop are connecting to 5GHz and the other laptop connects to 2.4GHz. The TT Wi-Fi Hub is the only WAP in the house. I've disconnected the Hub and used an older router, no issues there, this also means that the Hub was off and disconnected for about 24 hours. I've factory reset the Hub but the issue persists. I've checked the log and see nothing obvious at the time of the issue.
Is it possible to get a firmware upgrade, replacement Hub or any advice on how to resolve?
Router info: Hardware Version FAST5364 3.00 Software Version SG4K10002600t