Say what you need once. The applicant gets a single link, connects their accounts, and you receive a checked certificate — not eleven PDFs in a thread.
What are you assessing?
What must the certificate show?
The applicant will see
PurposeTenancy
Income needed€1,860 / mo
Recurring income onlyYes
Payer confirmationRequested
Your balancesNever
That's 3× the €620 rent, stated up front. The applicant learns whether they clear it before deciding to share anything.
Never shared
Bank balances, at any scope
Individual transactions or payer names, unless you ask