Recurring Investment Plan from available Cash

Currently, the Recurring Investment Plan only allows funding purchases directly via a saved payment card.

Please add an option to select 'Available Account Balance / Cash' as the payment source instead of a card.​

Why this matters:

-​Allows users who fund their accounts via SEPA/bank transfer (to avoid card details online) to fully automate their regular buys.​Prevents unnecessary debit/credit card processing overhead.​

-Aligns Freedom's automated investing features with other standard brokers that allow recurring orders straight from free cash.