Thanks for providing the logs.
The logs you are using the default automatic configuration of remote access through a dynamically allocated uPnP port.
Each attempt to get the router map a port is failing
Jan 05, 2019 16:23:27.337 [13248] DEBUG - NAT: UPnP, attempting port mapping.
Jan 05, 2019 16:23:27.399 [13248] WARN - NAT: UPnP, error mapping port 17133, error: Action Failed, controlURL: http://192.168.1.223:5555/ctl/IPConn.
Jan 05, 2019 16:25:06.128 [11956] DEBUG - NAT: UPnP, attempting port mapping.
Jan 05, 2019 16:25:06.183 [11956] WARN - NAT: UPnP, error mapping port 28811, error: Action Failed, controlURL: http://192.168.1.223:5555/ctl/IPConn.
Jan 05, 2019 16:25:09.933 [1328] DEBUG - NAT: UPnP, attempting port mapping.
Jan 05, 2019 16:25:10.018 [1328] WARN - NAT: UPnP, error mapping port 24969, error: Action Failed, controlURL: http://192.168.1.223:5555/ctl/IPConn.
Jan 05, 2019 16:26:52.937 [0876] DEBUG - NAT: UPnP, attempting port mapping.
Jan 05, 2019 16:26:52.997 [0876] WARN - NAT: UPnP, error mapping port 18830, error: Action Failed, controlURL: http://192.168.1.223:5555/ctl/IPConn.
Jan 05, 2019 16:27:15.128 [11968] DEBUG - NAT: UPnP, attempting port mapping.
Jan 05, 2019 16:27:15.193 [11968] WARN - NAT: UPnP, error mapping port 17417, error: Action Failed, controlURL: http://192.168.1.223:5555/ctl/IPConn.
Jan 06, 2019 15:36:15.575 [18224] DEBUG - NAT: UPnP, attempting port mapping.
Jan 06, 2019 15:36:15.575 [18224] DEBUG - NAT: UPnP, didn't find usable IGD.
Jan 06, 2019 15:36:15.575 [18224] DEBUG - PublicAddressManager: Mapping failed.
Check that NAT / uPnP are enabled in the router
It may be that the router got into a state where it needs to be rebooted
If problem persists and disabling / re-enabling remote access does not succeed in getting a port mapped, get some wireshark packet capture to go with the logs. Download wireshark link Wireshark · Download
Save the wireshark capture to default pcap file and zip and send me by private message and provide logs as before
If automatic port mapping continues to fail, consider switching to having a port forward setup in the router and selecting manually specify port