HBO Now not available on 2nd & 3rd generation Apple TVs
Following a one-month extension, HBO Now is no longer available to use on the second-generation and third-generation Apple TV, leaving users with the prospect of upgrading to a newer model or performing a workaround to continue accessing the service.

The original decision to pull the HBO Go and HBO Now apps from earlier Apple TV models in April was postponed by a month. The late-April delay enabled users to continue using HBO Now on the Apple TV until May 15, but now access has been pulled on the second- and third-generation Apple TV.
Despite the removal of HBO Now from the Home Screen on those models, as spotted by 9to5Mac, users will still be able to take advantage of HBO Go for a while longer. An HBO spokesperson explained in April the HBO Go app will remain available for "a few additional months."
The extended availability of HBO Now may have been due to the coronavirus pandemic, though it has not been officially confirmed to have been the reason for the app's continued availability.
While owners of the older Apple TV models may be pressured to upgrade to a new fourth-generation Apple TV, there are ways to be able to continue watching via the set-top box, such as through AirPlay streaming.
HBO is currently preparing to launch HBO Max, a video streaming service that will open on May 27 with 10,000 hours of content. The service will draw from WarnerMedia's extensive 100-year-old catalog as well as offering original content, including an unscripted cast reunion of "Friends."
The service will cost $14.99 per month for new customers, though current HBO Now customers are speculated to be automatically upgraded to HBO Max without any extra fees if they are billed through the App Store or subscribe via Apple TV Channels.

The original decision to pull the HBO Go and HBO Now apps from earlier Apple TV models in April was postponed by a month. The late-April delay enabled users to continue using HBO Now on the Apple TV until May 15, but now access has been pulled on the second- and third-generation Apple TV.
Despite the removal of HBO Now from the Home Screen on those models, as spotted by 9to5Mac, users will still be able to take advantage of HBO Go for a while longer. An HBO spokesperson explained in April the HBO Go app will remain available for "a few additional months."
The extended availability of HBO Now may have been due to the coronavirus pandemic, though it has not been officially confirmed to have been the reason for the app's continued availability.
While owners of the older Apple TV models may be pressured to upgrade to a new fourth-generation Apple TV, there are ways to be able to continue watching via the set-top box, such as through AirPlay streaming.
HBO is currently preparing to launch HBO Max, a video streaming service that will open on May 27 with 10,000 hours of content. The service will draw from WarnerMedia's extensive 100-year-old catalog as well as offering original content, including an unscripted cast reunion of "Friends."
The service will cost $14.99 per month for new customers, though current HBO Now customers are speculated to be automatically upgraded to HBO Max without any extra fees if they are billed through the App Store or subscribe via Apple TV Channels.
Comments
But whatever the reason we can be absolutely sure that users will blame Apple and accuse Apple of planned obsolescence. Apple will get the black eye and HBO will fly under the radar on this.
(update) I just remembered that HBO and Warner Media are now owned by AT&T. This explains everything!
Buy a new box. It costs $5/month.
At least it is not your 18-month-old Samsung TV that will never receive software updates.
..it appears to be saying channel subscribers can use the stand-alone app (not a channel...yet). Not sure how that will work as far as authentication credentials.
By removing support for an older device, they are making a deliberate decision to cut off the access of anybody who only has that device to subscribe to their service.
I suppose that they have stats which shows that this group of customers is not important or significant enough for them to continue to provide support or to keep the app updated for that particular group. They know who their users are and what devices they are using when they connect to the service.
The Apple TV 3 is over 8 years old, I have one myself that I keep in another room, though I mostly use the newer Apple TV 4k these days.
If somebody's newest streaming device is a very old Apple TV, is it likely that that person is going to shell out $15 a month for a streaming service?
And if somebody has an old Apple TV and they really want to have HBO on their TV and they are frugal and they don't want to buy a newer Apple TV, then I suppose that those people can always buy a cheap stick from somebody else, like the Amazon firestick 4k, which has often been on sale for like $25, so I don't see this as a huge issue.
I just connect my iPad to the TV via HDMI for all the problematic apps... Not as convenient, but I feel that life in general has more pressing issues at the moment, so I guess I’ll survive these horrific setbacks without much drama 😆
Thankfully, I did not laugh at this obvious misinterpretation of the dialogue 'cos it worked. Now have Apple TV+ on the TV without the need to Airplay it from the new iPad.
Legacy platforms require more work and fragmented encoding/packaging/DRM.
Airplay will likely work from an IOS device.
https://developer.apple.com/documentation/http_live_streaming/about_the_common_media_application_format_with_http_live_streaming
And on this tvOS wiki it looks like 3rd gen can't run tvOS 10:
https://en.wikipedia.org/wiki/TvOS#tvOS_10