JMeter: After installing Blazemeter plugin for Random CSV, Jmeter is not allowing to right click on "Test Plan"

I just installed bzm plugin for Random CSV but now Jmeter is not allowing to right click on "Test Plan".

Even, "edit" menu looks diabled, have restrated JMeter multile times, still no solution. Please help. Also, this is not the first time I have faced this issue after adding and installing plugins.