I was told by @emmanuel the following:
If you reach the needed amount and have more than 3 people, please coordinate with people via Paypal so that we can do only one payment, we can't handle the different charges if each of them is 100.
So I assume we can do this in several ways:
1- I will make the payment of $1,200 to bubble and each one of 12 send $100 to my Paypal account.
2- Anyone of the 12 who has a stripe account can make the payment to bubble and we can send payments to his stripe account. For myself I cannot accept payments on stripe, not supported in my country.
What do you think guys?