Unable to uninstall older version

Somehow I messed up the installation process. now when I try to uninstall older version, the dialog pops up and after clicking "UnInstall" it disappears and NOTHING happens. I tried Restart, TEMP folder cleanup etc. but no use.
Please help
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Hello Dheeraj!
Thank you for the feedback.
Please try to uninstall R# as described in the following help article - https://resharper-support.jetbrains.com/hc/en-us/articles/206545359.
Please let us know if it helps.
Thank you.
Tried it. still it only uninstalled one of them. the other one still did not go and will not go. :(
@Dheeraj Looks like some of Visual Studio updates creates a new instance ID so old ReSharper was installed to previous VS instance ID. You might do the following things to remove old ReSharper installation manually
Alexander, Thanks. It helped.