The ip should be 127.0.0.1, The port should be the post the API is set to in VTS. If you dont have touch portal pro you can not use plugins so make sure you have that (Nothing I can do about this sorry). If you do have TP pro then load things in this order, VTS > TP on phone > TP on PC.
I have pro, the plugin just wont conect with Vtube Studio for some reason. Well, I'll keep trying. It used to work on my old pc but when I switched it just stoped so Ill keep trying. Thank you tho <3