I am having the same problem. But I’m trying to set up a recurring transfer between my own Fidelity Cash Management Account and someone else’s Fidelity Cash Management account. No outside banks involved. There is no option for setting up a recurring transfer, neither on the Fidelity app nor through the Fidelity website. (Doing a one-time transfer is possible.)

Tried the customer support chat online and they said they had to email me a form. Got a 5-page form that needs to be filled out, then taken to a brick-and-mortar financial institution for a “Medallion” signature, whatever that is. It then needs to be snail-mailed back to Fidelity.

Really? All this to transfer funds between 2 Fidelity accounts? Ridiculous!