Mail address trouble

Hey there, got a customer which mail address not working anymore with Akaunting system saying that user inactive and address disabled. Problem is that his address is normally working with other customers.
Any idea ?

It seems like there might be an issue specific to the customer's account in the Akaunting system. Their email address is functional for other customers, but the system shows it as inactive and disabled for this particular user. This could be due to a configuration problem or a unique setting in their account. Investigating the account settings and system configuration might help identify the root cause of this issue.