Cant switch projects

Hi, I have 4.21 4.18 4.15 4.7 installed they where blue icons on my projects to switch but now thats not there and I cant seem switch versions now.

How can I get this back, what happen was my pc crashed and I had to restart and when It restarted thats when Iā€™m unable to switch version. Please help fixs this anyone, :slight_smile: thanks

You cannot open Unreal Engine and see your projects there?