Are there any banks that don't support standing orders through open banking?

The following banks do not support setting up standing orders through open banking yet:

ABN Amro Netherlands
Chelsea Building Company
Co-Op
Handelsbanken
ING
Lloyds Commercial and Business accounts
Metro
Mettle
NatWest Bankline
RBS Bankline
Starling Bank
TSB Bank
Ulster Bankline
Wise
Yorkshire Building Society

If you've received a payment link for a standing order, you cannot set this up using these banks. To set up the standing order you have a few options:

Try using a different bank account.
Log in to your online banking and set up a standing order manually using the account details on the payment link.
Reach out to whoever's sent you the payment link for a different method of payment.