Problem with public feeds when creating Virtual Feeds

Hi all, im having problems with public feeds, i discovered if i delete all Virtual Feeds, my dashboard can stay public again.
But when i created more than 2 virtual feeds, its lock again.

I’m trying to add two results of 2 sonoff pow and show in a virtual feed, the first virtual feed works perfectly, the more when I create a second virtual feed, the public access to my dashboards disappear the feeds.

Below the first virtual feed

Any ideia??