Error: "Unable to retrieve subscription" when a valid subscription exists

Getting an 'Unable to retrieve subscription' error in Sage 50 despite having a valid subscription plan.

Other related errors

"Remote Data Access isn’t currently available to all subscribers. If you have a subscription or service plan that includes Remote Data Access...check back soon."

"Your customer record indicates that you aren’t enrolled in a service plan that provides product updates."

"To Pay vendors and employees or collect payments from customers through Direct Payments..."

Check the service plan and reopen

1. From the main screen of Sage 50, go to Help, Update service plan.
2. Ensure the account ID is correct and click Check Service Plan.
3. After the system retrieves the service plan information, close Sage 50 and reopen it.