I fund $40 using a debit card and received the $20 bonus immediately. Funding with a debit card is instant with $1.95 fee. You need to wait for NetSpend card to arrive and activate it before funding the card or adding the account to Paypal or online banking, otherwise the verification process fails. Paypal will keep not letting you add the account in case that it fails once. So be cautious about it.

I think once you fund your account ($40) you should receive your sign up bonus and whoever you used his/her link should receive the referral bonus.