Why does Kraken have a 72 hour hold?

https://anterior-cualtos.udg.mx/sites/default/files/webform/why-does-kraken-have-a-72-hour-hold.pdf
https://anterior-cualtos.udg.mx/sites/default/files/webform/is-zelle-via-phone-number.pdf
https://anterior-cualtos.udg.mx/sites/default/files/webform/is-zelle-safe-to-receive-money-from-strangers.pdf
https://anterior-cualtos.udg.mx/sites/default/files/webform/is-zelle-a-24-hour-service.pdf
https://anterior-cualtos.udg.mx/sites/default/files/webform/is-zelle-a24-hour-service.pdf
https://anterior-cualtos.udg.mx/sites/default/files/webform/how-to-talk-to-a-person-at-zelle.pdf
https://anterior-cualtos.udg.mx/sites/default/files/webform/how-to-cancel-or-dispute-a-zelle-payment.pdf
https://anterior-cualtos.udg.mx/sites/default/files/webform/how-much-can-i-zelle-at-one-time.pdf
https://anterior-cualtos.udg.mx/sites/default/files/webform/how-long-will-kraken-hold-my-money.pdf
https://anterior-cualtos.udg.mx/sites/default/files/webform/how-long-do-zelle-transfers-take-zelle-support.pdf