Editing the link as I paste the wrong one. //
Thank you but I already did that as you can read above Electrum is not accepting my private key that Bitpay is providing.
Upon reading this
article, bitpay wallet should be compatible to electrum wallet.
What character your private key start with? Is it 5, L or xprv it should work for those start on these characters. Also this
article will help for that.