Thanks @david64    Not sure about the nbn.  But yes, I suppose a new cable may be the way to go.  Thank you.   Yes - all the devices support both 2.4 and 5G.  Not sure about the reticulation (that is very new!!).   I have been on the phone to TPG and have logged into the router finally.  He has gone through everything with me as per their manual and even tried to look up apple info for the TV.  The security choices are one of 2 options either: none or WPA2-WPA3-Personal.  There is no option to select either WPA2 or WPA3.     I can access the wifi settings on Sagemcom and all the settings are the same for both 2.4G and 5G.   "Connecting to the Router: when I login in with the 192.168.1.1 admin - I can only seem my old accounts. The new one is not listed."  Yes - when I had previously connected to the IP address - I could only see the old Archer 1200 modem.  The Sagemcom was not listed in this IP address.  The IP address is now only listing the Sagemcom and not the Archer.     TPG nor Apple seem to have an answer.  It would seem the only options would be to keep the existing Archer modem through nbn or to place the new Sagemcom modem next to my Apple TV and use the ethernet cable.  This has been a painful experience and apart from the TPG rep I spoke with this this afternoon, they have been useless and haven't seemed to want to help in the slightest even though I hadn't initiated the new modem.  They also promised a call back this morning to discuss with their accounts team, with which I never received a call back.  Now they tell me it's too late.  Not happy!!   ... View more

Hi @SidneyReilly  did you end up getting this issue sorted?  I am having the same issues as you and no one seems to be able to help me! Thanks, Sarah ... View more

Hi @david64  We have an nbn connection. It’s a TP-link AC 1200. Model: Archer C1200. It has the option to connect to either 4G or 5G Wi-Fi. I have never and still don’t have an issue connecting to Apple TV. My new router is: Sagemcom Fast 5866T. The Apple TV unit connects without hassle to this network when I use the Ethernet cable. TPG suggested there was an issue with the range and suggested an extender for the Wi-Fi. However, the modem is closer then the other one is and when I was speaking with apple, I had the modem right next to the Apple TV. When I change networks for instance on my Apple TV - through my old nbn modem - you select the network, enter the password and all is good. The new modem: you select the new wireless Wi-Fi but Apple TV does not allow a passcode to be entered and goes directly to an error page advising that you have entered the incorrect password (but there was no option to enter one to begin with).   Connecting to the Router: when I login in with the 192.168.1.1 admin - I can only seem my old accounts. The new one is not listed. I have not tried the Ethernet cable….Maybe something I should try today? So I probably spent 4 hours trying to fix this issue with apple. We have reset Apple TV and restored all settings about 6 times each to no avail. I have also restarted the new modem a number of times too. Apple have suggested I check the router to change the WPA (?) security and make sure it is on WPA 2 which could be affecting the compatibility. I have laptops (non apple), iPads, iPhones and even a reticulation system that have had absolutely no problems connecting yo the new Wi-Fi. The Apple TV is a 3rd generation and seems yo have everyone stumped. I am on a 7 day trial with the new modem which is up today. TPG couldn’t even help me extend this as yet. I would prefer to keep the new one as our nbn is in an awkward position but this is just insane and I am not computer literate! Thanks heaps Sarah ... View more

Hi Guys,   I am having exactly the same issues.  I have spent hours on the phone trying to rectifiy with both TPG and Apple. TPG advised it was a range issue, which it is not as I had the modem next to the apple TV yesterday trying to connect wirelessly and through an ethernet cable.   Apple have suggested I change the WPA settings.  I am able to login to the router, however it seems that only my old nbn modem is being viewed and I cannot access the new one to see which setting it is on.   Hope someone can help. Sarah ... View more