Technical issue when creating custom fields on cards in Wix Pipelines

I’m having trouble with
PIPELINES

Working in
Wix Studio

What I’m trying to do
Create custom fields on Cards in Pipelines

What I’ve tried so far
I’ve created a few custom fields as a test. Then I deleted them. Now I’m trying to create some new custom fields. I keep getting an error message. I’ve tried refreshing. I’ve turned it off and on again. I’ve been praying to the gods.

Extra context
See screenshot:

@h11 - I see you’ve opened a ticket with Customer Care, which was going to be my suggestion, since it seems likely that this is something on Wix side (you’ve done the normal troubleshooting steps I’d recommend)