Apologies in advance for my naivete.
Long story short: recently switched to Linux Mint on all three machines (PC, laptop, MacBook), and went with Syncthing to mimic how OneDrive for Windows populates changes on files saved to desktop on all three devices.
The issue: I installed and have Syncthing running for all three machines, but have noticed the ID for the PC keeps changing each time I log in. It’s never the same for some reason, and thus the sync to the other two machines will not work as a result. I have not seen this behavior occur on either the laptop or the MacBook, and the settings for all three seem to be the same, so I’m at a loss as to what might be causing this. Only difference I can think of is that the PC is a wired connection, whereas the other two are WiFi, though I can’t imagine that would matter.
Any thoughts? I can provide any logs, screencaps etc. that would aid in the troubleshooting.