If the new TAN method has been enabled by your bank, please update your credentials as follows:
'Settings' > 'select credential' > 'Update configuration'
The new TAN method can then be selected at the end of the payment.
What to do if this Error comes up: PIN/TAN-Verfahren widerspricht dem Legitimationsvertrag' - macOS-Version / Known Issues / Bank errors - Outbank Helpdesk
dkb, legitimationsvertrag, pin/tan-verfahren, sparkasse, tan-verfahren