Our NPSP version 3.211 has been pushed to sandbox orgs. Please look for this version in your org in the next few days and report any issues. 

• We fixed an issue with the Manage Household page where the page wouldn't load without permissions to Undeliverable Address fields.

#6733: Manage Household Page Fails to Load If Customer Does Not Have Access to New Undeliverable Address Fields #6755: Deleting a contact from a non-Household account renames the Account Name and populates the Primary Contact field