It seems that it is not Revolut to blame. As stated on Kraken:
"Deposit information regarding third party payment processors (e.g. Revolut, The Currency Cloud, Transferwise, etc.)
Kraken cannot accept deposits from third party payment processors for compliance reasons.
Whenever possible, we will request the payment processors to block our accounts for deposit from their services. For others, we have blocks in place that will make a deposit impossible or return them automatically.
Please note that we are unable to help with the tracing of third party payments that did not make it to our system. The problem lies with the payment processor and needs to be resolved by them. Please always read the full deposit information on your deposit page on how you can fund your account."
Though, it is strange that they block it since we have accounts in our names in Revolut and Revolut has confirmed to me that the recipient gets the amount delivered by our name not a generic Revolut one. Just like a real bank. Puzzling.