Wero seems promising. But I am confused as it appears they have acess to my bank account’s balance and transaction history. The privacy policy (Archive.org) states on page 4

Purpose: Displaying your account information (performance of a contract – art. 6.1.b of GDPR)

Categories of data processed: Balance and transaction history of your payment account

Retention period: Duration of the contract (the Wero General Terms & Conditions)

The term “payment account” is not properly defined in the document, but I would infer from the first line on page 4 that it is the connected bank account.

This would be significantly more invasive than PayPal. Would be a dealbreaker for me, as I don’t even see a plausible reason for doing this.

Their FAQ states the contrary:

Wero does not have access to your transactions or any other account activity beyond the information we need to complete a Wero payment.

Again, “information we need” is quite vague…