2 Palo Alto cats having trouble adjusting to new catio

DEAR JOAN: We just added a catio to our patio for our two adult ragdoll cats that have always been indoor cats. We thought they would love to spend time with us outside admiring nature.

Not!

They are very traumatised and try to tear it apart to escape, while crying the entire time. We have added more fun things to the catio (toys and a scratch pad) and we have been keeping the door to the catio open so it doesn’t feel so much like a cage. What other things can we do to help them learn to love their new environment?