Hi there !
Have you tried to deposit to WiLLbe account or withdraw from it with IBRK ? I guess it can be problematic because brokerage accounts are typically Omnibus accounts without a personal IBAN assigned what most probably breaks their validated account rule.
“A validated account is a registered account that is specified when creating a savings plan/standing order and validated when the first successful deposit is made. An account can be registered but not yet validated. The registered account must be in the customer’s name in order to be validated”
“Due to legal requirements, we can only accept payments where the account holder of the sender account matches the wiLLBe customer.”
I would like to park temporarily my USD that I have currently at IBRK at willBe instant access account without transferring it to CHF first - I have Swiss bank account and can transfer them through it.