Thank you for replying so quickly!
Without going into details...everything is set up right and has been working normally except for this one ipad. I'm thinking it's just the ipad, however, we are changing internet providers (coming in today actually) and expecting much better service to use multiple devices well. I suspect this could solve our occasional issues of having to restart things - including the printer sometimes! Once the change is up and running we'll see if the issue continues. If so, I will call Apple. Perhaps someone can walk me through steps to figure out what's up with this ipad. 🙂