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That is on the roadmap. We have a number of planned features which will require user registration and saved preferences. All of that will be down the road a ways due to limited budget.
A completely new AC Central system is in the works and it includes just that feature. It will likely be available late this summer.
A completely new AC Central system is in the works. Once it launches, likely late this summer, the web browser version will be nearly identical in look and functionality to the apps.
Video is not actually part of AC Central, yet. Video is being setup and delivered locally. And sound levels are controlled at each church. If you are having problems with low volume, please ask them to increase their audio output to the live stream (this applies to video and audio-only).
The system simply cannot handle the unprecedented demand we are experiencing during the coronavirus lockdown. We are doing what we can to increase server capacity and stability, but can't guarantee there will not continue to be problems for some users during peak times.
There is an update available now in the Play store that has a fix for this issue.
AC Central is designed to continue playing after the phone goes to sleep. You may have a problem with your specific device or a corrupted installation. Try the steps listed here: https://accentral.userecho.com/knowledge-bases/2/articles/166-general-app-troubleshooting
Regarding being unable to download on iOS, many people are confused about that. See if this addresses your issue: https://accentral.userecho.com/communities/1/topics/254-how-can-i-download-a-podcast-from-around-the-table
For iOS, you must be in a specific category group to see the download option. So you won't see it in Around the Table>All Around the Table, but you will see it in Around the Table>Podcast.
That is really strange. What version of Android are you running? We are not seeing that issue on any Android 8 or 9 test devices. Things to try: 1. Refresh the screen by pulling down, 2. Delete and reinstall app.
Customer support service by UserEcho
This is not currently available. However, an all-new AC Central is in the works so this is something that could be considered once the initial work gets completed. What type of "local church requirements" are you needing to meet?