Orbi Router "Waiting"

Hey people... I've got an Orbi mesh router running V2.7.2.104  with 4 satelites and about 38 devices connected.

The network and satelites are up and running consistently.  Problem is the main Orbi randomly decides to go to "Waiting" for it's internet connection.  When I connect directly to the ISP's router - no problem.  So internet is getting into the house, just not to the Orbi.  When I do a reboot of the Orbi, it usually works fine.  When I log into the Orbi and do a "Test" it switches from Waiting to Good.

This all started after the last Orbi firmware upgrade.  Prior to that it had been rock solid for years.  Is there some bug in the software on the Orbi I should know about?  Any trick or setting I can use?  Is it possible to roll my Orbi back to the previous version?

Any help appreciated.  Thanks in advance.