As a first step you can run the timedatectl command to check if your system clock is still synchronized. I’d also recommend installing an NTP service such as chrony to keep things synchronized https://linuxhint.com/install-ntp-using-chrony-linux/ (follow the Debian install guides), some users are reporting this resolves issues after disconnecting/reconnecting a device.
I’d also like to ask some of the other basic questions:
- How is your Umbrel connected to the Internet (Ethernet, WiFi)
- What type of drive you are using (HDD, SSD)
- Anything else you think can be relevant, especially after you made any hardware changes…
As you swapped out the hardware, are you sure the cable is a USB 3.0 A to USB-C? One easy way to tell is if the end of the cable itself also has a blue finish on the jack. Secondly, try using a different USB 3.0 port, rebooting the router and the Umbrel, and waiting for it to begin syncing once more.
Setting a static IP for your node also helps resolve connectivity issues: How to set a static IP for your Umbrel server
Hopefully this helps you begin troubleshooting, let us know what else you’ve tried so far and we can continue to help or if you find a solution!