Paypal — Not able to claim the payment

We have got the payments on 8 march 2022 but not received into my bank account and after some days we have got another mail on 12 mar 2022 which says Claim it by April 7, 2022 or it will be returned to the sender.
so, when I going to claim this money a notification shows that this money is no longer exist. also we have remove our email address by mistaken from PayPal account. and now not able to add this email id again on PayPal.

Please let us know how to add this E-mail ID and how to get our payments.