My email is being shown on PayPal page.

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That is happening because you are receiving buyers' checkout payments to a personal PayPal account.

We recommend getting the free upgrade to a PayPal Business account, which should allow you to specify a business name that would be shown during checkout and in PayPal payment references (rather than showing buyers your PayPal Email address), as well as lifting your monthly payment receiving limit, and optionally allowing your buyers without a PayPal account to pay with a credit card on PayPal's checkout site, among other business-minded amenities. You can use this link to upgrade to Business if you haven't already.