[Inovoices are not being sent - Unsent]

Further to this: I get this in the logs

Attempting to deliver invoices scheduled for delivery.
No invoices are scheduled to be delivered.
The deliver invoices task has completed.

Therefore i think it's not seeing them... but none are sent

[Inovoices are not being sent - Unsent]

Something strange happened on March 18th, where invoices stopped being sent after being generated. It was working fine, then it stopped. The cron is running, but all newly created invoices are stored as Unsent. Sening them manually works fine. Further to this, all other notifications such as Unpaid reminders, credit expiration works fine... and so on. Looking at Blesta's email log, it shows all other emails sent except for Invoice Creation. Manually I am able to send it, and it logs it. 

Can anyone give me an idea where to look? 

Under the delivery type is set to email and enabled. 

Looking at this component, but nothing seems to be missing or edited. 

/components/invoice_delivery/invoice_delivery.php

Any help where I should start digging?

 

I am running version 5.2

[Net Terms (Net 10, Net 15, Net 30 Etc..)]

Is this still in the works? This is the one feature that is missing for me to migrate to Blesta.