3 XD Brightsigns, connected to each other via ethernet, not connected to the web, are running from sd cards.
A old presentation is running just fine. I reopened BA Connect for the first time since 2020 and as a test, opened and burned the exact same presentation that is currently running with no modification onto the same type of card. The screen says: "Waiting for network connection". What could the reason be?
Thanks very much for any advice.