Could not duplicate page

Could not duplicate page

Dear support

I could not find Zoho Learn room, so I send the topics here.

In these few days, I could not duplicate a page on Zoho Learn.
When I try to duplicate message is up, and say try again later, but I retired several time in these days, nothing are change. What's going on?

I attached screen vide capture to this message.

Best regards,
Kunio Matsui