Why is the AMC app not working?

It's All Good Man! Worked like a charm! 

Thank you so much this worked for me!

Tried that method with TWD.  It opened the AMC app briefly then went right back to the Roku home screen. Trying to avoid doing the whole reset.

The Full Reset worked! Thanks!

Did factory reset and immediately tried to reinstall and open it, still won't open.

Good to know I am not the only one having problems.  I was hoping to find a solution here.  I’ll check back in a few days

Update:  As of yesterday, the app is now working for TWD.

I have that problem with AMC Plus on Roku. I've contacted the AMC Plus tech support and they are trying to fix it.

When you reinstalled, did you follow the following procedure?

1. Highlight channel on home screen.
2. Press * key and choose Remove channel option.
3. IMPORTANT- DON"T SKIP: From home screen, Settings > System > System restart. This assures no remnant of the old installation remains in the Roku's memory.
4. After system restarts, find channel via Streaming Channels.
5. Highlight channel and install.
6. If channel requires a login, you may need to log in anew.

Yes, that problem that spontaneously cropped up on only my Roku 4K Streaming Stick+ with latest OS.   I am on Spectrum cable and Internet.   The AMC app was previously running flawlessly, and was authorized, and had the correct login information, etc. but suddenly would just not start up.  It would trash out and  loop back to the Roku Home screen.  

After trying less drastic fixes, like restart, clear cache, and remove/reinstall the channel, I finally resorted to a complete reset to factory defaults.   (You will need Internet access and email to do this!!)   That purges any patches or incomplete updates in the operating system and proceeds directly to the latest version.  Once you log in and it "creates" your account on that Roku device,  It will give you the option to either put back all the channels you had, or start fresh.    You will need to Activate all independent channels that are tied to your cable subscription and that require a separate login.    This is not the first time I've had to reset one of my Roku devices to factory default to clear up some login problem involving Spectrum cable service.   However, a reset to factory default has fixed the problem every time.  

eta:   I have 4 different models of Roku devices made 2016 to current.  The Roku Streaming Stick+ 4K is the ONLY one that developed a problem with the AMC channel.  eta:  The only Roku, this time.  I've previously had the same issue with some of the others.  I suspect corrupted or incomplete updates are to blame.  But I don't really know.

I'm having the same issue, and I've restarted my roku, uninstalled the channel, re-installed it, unplugged it, and still nothing. I also sent feedback. It was working fine prior to this.

This has happened to me too I stopped trying for about 2 months and then I tried again with same results cannot get into AMC tells me I'm already subscribed but I'm subscribed through Roku. Email them and called them still can't get in so frustrating. I feel your pain

Same problem with mine. 

AMC is supposed to be free. right?