No keyboard mapping scheme in VS2017 15.7.6 Follow

Background info:

OS: Window 10

VS: Enterprise 2017 version 15.7.6

Resharper: Ultimate 2019.1.1 Build 191.0.20190501.122851

In Resharper options, I have set scheme to Resharper 2.x or IntelliJ IDEA

Issues:

1. Under Options>Keyboard>mapping scheme, there is no Resharper (Visual Studio)

I could not use resharper shortcuts like ctrl + / or Alt + enter

2. When I highlight a line of code, and go to ReSharper>Edit, a lot functions are disabled

What I have tried but failed to resolve the issue:

1. Repair Resharper

2. Reset mapping scheme in VS Tools>Options>Keyboard,

3. Set scheme to None in Resharper>Options>Apply>Save and then set to Resharper 2.x or IntelliJ IDEA and apply and save

4. Restarted VS