Thank you for the quick feedback. I'm recording the process I went through, thinking that there may be others like me who are beginners. The UPS I'm using is the EATON Ellipse ECO 1600 USB DIN.
1. When I updated Unraid from 6.11 to 6.12, I encountered an issue in the "Update assistant" indicating that a plugin was not compatible.
2. Upon seeing the message, I deleted the plugin and proceeded with the Unraid update.
3. After the update, I found that the plugin was available for reinstallation, and when I did so, the user interface was completely different.
4. The Reset button was disabled.
5. I changed the "Start Network UPS Tools Service" to "No," and the Reset button became active.
6. I clicked Reset.
7. Then, I clicked on Auto Config.
8. It started working correctly.
Thank you.