So it looks like it is ok for a business to accept Zelle payments from customers, it just depends on the business bank account..

https://www.zellepay.com/support/im-...er-using-zelle
To send money to or receive money from a small business, a consumer must be enrolled with ZelleŽ through their mobile banking app, or enrolled in the ZelleŽ app with a deposit account. Some financial institutions are now offering ZelleŽ to their small business customers. Each financial institution’s definition of what is considered a small business account may vary, which means there could be changes to your experience using ZelleŽ with that business. Small businesses are not able to enroll in the ZelleŽ app with a debit card, and cannot receive payments from consumers enrolled in the ZelleŽ app using a debit card. So, if you’re no longer able to send money to or receive money from a small business, this may be why.