v8: Customers unable to see the Payment button on their Invoices - I've installed installed payment_paypal and payment_transfer


I have installed payment_transfer module of odoo v8 with latest code of github.
Now I am trying to see the Transfer Acquirer Button on the customer invoice, but it is not showing the payment button on there for wire transfer.
then I have installed the payment_paypal module of odoo v8. it is showing the blue strip. it is also not showing the payment button with link.
paypal was working before on the v7. but now it's not..!

I have checked it with the latest code on runboat, but found the same. Is there any bug?

My question is How can I do a successful wire transfer,
what should I do in order to display the payment aquire button on customer invoice.