As a Holvi customer, you can contact us about bank connections via chat or email. More info https://support.holvi.com/hc/en-gb/articles/115005238365-Contact-us
For bank connection partners and those using the bank connection through software e.g. accountancy, please contact us at connected.support@holvi.com
Read more about Holvi connections here https://www.holvi.com/fi/connections/