LM Android connect via IP?

[kmende]

LM Android viewer running on Android 10 is connecting to Windows 8.1 PC on local WiFi network via ID and all functions work fine. But unable to connect via IP.
IP on Windows PC is: 2601:681:5980:B640:0:0:0:E0AB, 2601:681:5980:B640:1D67:A5E5:6066:E14, 2601:681:5980:B640:F9CC:8C38:22B1:C056, FE80:0:0:0:1D67:A5E5:6066:E14, 10.0.0.219, FE80:0:0:0:5942:4282:7946:2C23, 192.168.255.1, FE80:0:0:0:5C24:E8E5:6D0A:16D0, 192.168.56.1
Have tried just PC's local address (10.0.0.219) and various combinations of long address above with no success. Help please!

[admin]

Possible problem in WiFi router.
Check another remote control sofrware from Android by IP connect, for example VNC

[kmende]

VNC Android viewer connected fine to server on Windows 8.1 PC using generated server name, but would not accept either IPV4 or IPV6 address assigned by WiFi gateway. See details attached. Not sure if this is same issue that occurred with LiteManager, but if so, any idea what WiFi router "problems" would cause either app to fail when using IP whereas ID works?

[kmende]

Found it. Disabled "Prefer Private Connection" on wifi gateway. LM now connects to server no problem. Much faster than ID connection, too. Thx for the tip!