IBAN (international bank account number) is primarily used within Europe & does not work when transferring funds to Indonesia. For a full list of IBAN supported countries click here.
To fund your investment with Blossom Finance via an international bank transfer you must use the SWIFT code system.
Note: on some websites you need to make sure that you select the recipient currency as Indonesian Rupiah (IDR) in order to enable the SWIFT code option. Make sure that you select Indonesian Rupiah (IDR) within N26 for the currency that the recipient will receive.