Photos on my Mac not displaying on Apple TV

I understand. My home sharing and store purchases are all set to the same Apple ID in my Mac desktop and my appleTVs. In fact, everything defaults to that ID and I can’t change it. Maybe more clearly, I cannot open my computer on my Apple TVs. This has been happening since I upgraded to 4th generation devices. Neither my home library of photos or music are accessible. I can only see those pictures that are in my photo stream or somehow connect to iCloud.

I don’t want to access Apple Music or only my streaming photos. I want to open the library to access the photos and music on my computer.

I have a different ID for email and iCloud since those services were offered long after I had setup an account to make iTunes purchases. I understand the difference and I’m logged into the correct accounts.

I’m not certain why this is so confusing. I have an Apple ID from more than 20 years ago when I needed it to purchase music from the original iTunes. Since then, it has also become the ID for all app, etc purchases. That ID has a .yahoo email login.

I also have an Apple ID that I set up when mac email for my computer was first available. Subsequently, iCloud, etc has been added to that. I use it for all those computer related services. It is a .Mac / .me email address.

Beginning with my first 2nd generation AppleTV, I was able to connect to my computer to see my pictures and play music that was stored on my computer. Through the 3rd generation AppleTV it worked fine. Since the OS when iTunes became music, I have not been able to open my computer library on my Apple TVs (I currently have 2 4th gen. One is HD, one is 4K) despite being logged in with the Apple ID I use for purchases which is the ID for homesharing.

I want to see the photos in my default photo library and the music physically stored on my computer - some purchased from the iTunes Store and some loaded from many CDs I purchased. I do not have an Apple Music subscription.

If the answer is that I need to use the Apple ID with a .Mac / me domain for homesharing, I need to know how to change that because when I have tried on my computer it returns to the app/Music Store ID and will not let me change it.

The AppleTV also has separate logins for purchases, homesharing and my .Mac account. They fill in automatically during initial setup.

I’m not confused, but it seems the programmers and support are. I have followed all the home share setup to the letter.

I miss the days when Apple did not release OS unless it worked flawlessly.

To further clarify, whether setting pictures from my home library or just trying to open the computer feature on the Apple TVs, the error I get is that the library can’t be opened. To check that it is on the same network.

All my devices are on my wifi network.