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Sorry to hear you’re facing problems 
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In order to help you as quickly as possible, before clicking Create Topic please provide as much of the below as you can. Feel free to use a pastebin service for logs, otherwise either indent short log examples with four spaces:
example
Or for longer, use three backticks above and below the code snippet:
longer
example
here
Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can 
Some useful links to gather information about your Nextcloud Talk installation:
Information about Signaling server: /index.php/index.php/settings/admin/talk#signaling_server
Information about TURN server: /index.php/settings/admin/talk#turn_server
Information about STUN server: /index.php/settings/admin/talk#stun_server
Nextcloud version (eg, 24.0.1): Nextcloud AIO v12.3.0
Talk Server version (eg, 14.0.2): Part of AIO- v32.0.3
Custom Signaling server configured: no
Custom TURN server configured: no
Custom STUN server configured: no
In case the web version of Nextcloud Talk is involved:
Operating system (eg, Windows/Ubuntu/…): N/A
Browser name and version (eg, Chrome v101): N/A
In case mobile Nextcloud Talk apps are involved:
Talk iOS version (eg, 14.0.2): v22.0.6
The issue you are facing: From my server settings screen I am seeing this:
High-performance backend
Error: System times of Nextcloud server and High-performance backend server are out of sync. Please make sure that both servers are connected to a time-server or manually synchronize their time.
This is preventing me from using Talk. Talk is giving me this error when attempting to open a chat:
Failed to establish signaling connection. Retrying …
I have validated my time zone on both my Unraid server and in my Nextcloud AIO and Nextcloud container. The AIO container is in UTC and the Nextcloud container is showing the correct time.
Is this the first time you’ve seen this error? (Y/N): Y
Steps to replicate it: Just starting up the container and this error shows. Happy to provide specific logs if someone knows which ones to look at.
I’ve had this setup going for over a year. I was using Talk last on May of 2025. Only updates I’ve done is standard AIO updates when it asks me to update. No other configuration changes.