Hii! Welcome to the forum 
Version 1.8.0 is quite new, just changed last week I think. Maybe the language server has not been updated yet? You could use 1.6.0 and try with the newer version later to see if it works?
I believe we are not using things that require 1.8.0.
I’m curious to hear how is the experience in vscode. In Idea I find it very good, but I understand is more convenient to use the same IDE for everything.
What kind of programs do you like writing? Looking forward to see what kind of experiments / creations you do
Update: Here I see “bump to kotlin 1.6”:
Update: There’s a PR to update Kotlin: