Looks like you are in the console. ~ is always relative to the player executing the command, in this case the console, which apparently is 0|0|0. Try /execute Bsayss ~~~ (your command)
example:
/execute Bsayss ~~~ tp @s ~ ~10 ~
will teleport the player 10 blocks up
hope this helps
seems to be the loopback adapter (if you are hosting on the pc)
read this: https://doc.pmmp.io/en/rtfd/faq/connecting/win10localhostcantconnect.html