I use membership pro 2 and PayPal payment. The payments not to be processed

Hi, I use membership pro 2 and PayPal payment. I tried first payment via PayPal, all went well, but the payments not to be processed . The membership billing is notice: "Last transaction is pending. Payment waiting for approval by service provider"
Do I need always manual approve any new member or it can be automatically? Or what is the problem that the payments to be processed?

thank you