Dear Connie,
From your description, it seems that the issue happens when you import from multiple tables and you are using ODBC data. f yes, may I know whether the issue happens when you import from other data sources?
About the second issue, it seems that the message might appear if there is some code that is running when the app opens.
For your reference:the command or action requery isn't available - Access 2013 - - Microsoft Community
Access 2013 - Switchboard Error on Open - Microsoft Community
We will also keep the thread open and welcome other community members to share their suggestions and ideas.
Thanks for your effort and time.
Cliff