I am using WINDOWS 7 . Maybe that's why it is giving problem . Should I try it on my Android phone as said above ?
Most likely that is the reason why you're not able to get it working properly... if you can't upgrade to Windows 10, then your options are:1. Try a Linux Live OS on a USB pen drive and boot from that
2. Try a Linux OS running in a virtual machine like Oracle Virtual Box
3. Try using Electrum on Android
What is your end goal here? recover the funds and spend them? or recover the funds and continue using Electrum?
Do you want a "permanent" solution that you can continue to use going forward or are you just trying to recover your coins?