I'm having the same exact issue. I called Comcast, and they've created a priority ticket to try to solve this very same issue. My wife and I have both uninstalled and reinstalled the App, and we are still getting this error message.
Hi rflanagan12 -
I pulled up your account & believe I see the issue. This is something I can handle for you directly. I will Private Message you with the email address on your account to confirm that with you. Can you please try signing in again & let me know if you're successful?
Typically sign in issues are account related issues that I can not post publicly. I private message users to provide them with sensitive billing information, account information, etc.
Having the same issue: logged in on my phone (Android) - no problem. Try to log in from my wife's (also Android) - get the message about having trouble logging in and to try again later. Have uninstalled/reinstalled. Have logged out from my phone. No matter what, unable to log in from my wife's phone.
Comcast phone support unable to help (totally unsurprising) - elevating it to Tier 2 now.
Rachel - can you help??
Hi cjhking -
I pulled up your account & see the tier 2 ticket that was opened for this issue is in resolved status. I also looked at it from my end and now see successful app activity from the device that was previously experiencing the 43401s. If you are still experiencing any issues, please reach out to me.