Where is my "Shared Folder" on iPad?

A friend has shared a folder with me for us to collaborate on some things, and it has shown up in iCloud Drive consistently for the last 9-10 months. Now, it has disappeared from the Files app on my iPad. It still shows on my Mac & iPhone. In fact, I can access a document on my Mac or iPhone that he added to the folder this morning, but the folder doesn’t appear on my iPad. So it’s not that I don’t have access anymore. Both iPad & iPhone is on 14.3; Mac is on 11.1. Any ideas how to get this folder back on my iPad?

Well, the missing shared folder magically appeared this morning. ¯_(ツ)_/¯