I’ve been using Syncthing for about 2 months, and have not had an issue until recently. I have a slot in a seedbox, the company offers Syncthing as an application, so I installed in on my Centos 7 home machine with no problems, both are running version 1.2.1. Here is a snip from the logfile on my home machine. I’ve replaced device ID’s, #'s and IP addys:
Aug 22 08:18:23 yzerman syncthing: [42NIF] INFO: Folder "Processed_TV @home" (52 njb-o9wkg) isn't making sync progress - retrying in 1m0.000363174s.
Aug 22 08:18:42 yzerman syncthing: [42NIF] INFO: Detected 1 NAT service
Aug 22 08:18:52 yzerman syncthing: [42NIF] INFO: Joined relay relay://*.*.*.*:22067
Aug 22 08:19:23 yzerman syncthing: [42NIF] INFO: Folder "Processed_TV @home" (device#) isn't making sync progress - retrying in 2m0.000304508s.
Aug 22 08:21:23 yzerman syncthing: [42NIF] INFO: Folder "Processed_TV @home" (device#) isn't making sync progress - retrying in 4m0.000382172s.
Aug 22 08:25:23 yzerman syncthing: [42NIF] INFO: Folder "Processed_TV @home" (device#) isn't making sync progress - retrying in 8m0.000346413s.
Aug 22 08:33:23 yzerman syncthing: [42NIF] INFO: Folder "Processed_TV @home" (device#) isn't making sync progress - retrying in 16m0.000365689s.
Aug 22 08:48:24 yzerman syncthing: [42NIF] INFO: Sent usage report (version 3)
Aug 22 08:49:23 yzerman syncthing: [42NIF] INFO: Folder "Processed_TV @home" (device#) isn't making sync progress - retrying in 32m0.000370439s.
Aug 22 09:21:23 yzerman syncthing: [42NIF] INFO: Folder "Processed_TV @home" (device#) isn't making sync progress - retrying in 1h4m0.000294171s.
^C
Aug 22 10:38:31 yzerman syncthing: [42NIF] INFO: Connection to <device ID> at 192.168.0.19:52558-*.*.*.*:22067/relay-server/TLS1.2-TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305 closed: replacing connection
Aug 22 10:38:31 yzerman syncthing: [42NIF] INFO: Device <device ID>client is "syncthing v1.2.1" named "lw825" at 192.168.0.19:42082-*.*.*.*:14368/tcp-client/TLS1.2-TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
Aug 22 10:38:31 yzerman syncthing: [42NIF] INFO: Folder "Processed_TV @home" (device#) isn't making sync progress - retrying in 1h4m0.000313168s.
Aug 22 10:44:17 yzerman syncthing: [42NIF] INFO: Sent usage report (version 3)
Aug 22 10:48:21 yzerman syncthing: [42NIF] INFO: Folder "Processed_TV @home" (device#) isn't making sync progress - retrying in 1h4m0.0003168s.
I’m not certain how to diagnose this further, any help is appreciated.