Using Multiple UPS Accounts with NRGship Pro/FM for UPS
Current versions of NRGship support multiple UPS accounts differently than in the past.
UPS accounts are now managed thru the NRGship Account Portal. Thru the portal you can add, delete, and update account information. The Portal is also used to link your NRGship Account to your UPS.com credentials.
Because your NRGship Account is linked to a specific UPS.com login, there can only be one instance of that UPS.com login along with your NRGship Account. If you request credentials twice with the same UPS.com login, it will break all other credentials.
While you can have multiple UPS accounts in your NRGship Account, each UPS account should have a distinct UPS.com login OR you should setup the UPS.com login so that it has access to all of your accounts.