Hello Mago6246!
Well, unfortunately, you are only able to have one Paypal at a time, but if you would like to change it and have more than 50 sales, we will be more than happy to remove the current one on your account so you can change it.
Now, regarding the notifications, we currently have the following options:
I will save your ideia to receive e-mail notifications when users comment on your listings and see if we can implement this on future updates.
God speed!
