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You have to top up your account via PayPal when your credit gets low as we do not charge your PayPal account automatically.
I have the same question Domingo Robaina asked.
Do you automatically charge the Paypal account when needed or should I add credits manually ?
<br>If credit reaches $0, are the droplets erased ? Do you send any prior alert ?
We have now integrated PayPal payments. You can now submit credits to your account at anytime.
We manually process PayPal payments at the moment and will be integrating fully in late September.
<br>For now just open a support ticket if you would like to pay via PayPal.
What about Paypal ?
We accept Visa, MasterCard, American Express, and Discover.