I don't deal with Raisin (to me dealing with a 3rd party fintech isn't worth it on so many levels) but for those who do, their website today says: "We’re also updating the Funds Transfer Agreement and Custodial Agreement." Since I don't use them I don't know what's changing, but if I did, I'd certainly make it a point to look and read the fine print.
Their current rates are nothing to get excited about (1 month CDs?) and same or better can be found outside the platform.