EDIS sometimes receives emails regarding double-charged PayPal accounts.
EDIS does not withdraw any money from clients' PayPal accounts. In case you have a subscription (recurring payment) setup in your PayPal account, PayPal sends the same amount every month and pays automatically from your account.
These payments are initiated by PayPal.
Sometimes it can happen, that clients signup for 2 subscription for the same service.
This causes automated double-payments. These overpayments are detected and added to your EDIS credit balance.