Canno able to add email ID.

[Animesh19]

Why I cannot add another email address or remove my home address? It is showing an issue and telling me to contact customer care.

[kernowlass]

@Animesh19 

You need to contact customer services to resolve any account specific issues.
Click help / contact bottom left of Paypal pages for options available for your country.

Or have you considered contacting Customer Service via Facebook or Twitter?
You can send them a personal message from their facebook or twitter pages.
It's: https://www.facebook.com/PayPal and @AskPayPal for Twitter.