BUG : Reccuring invoices not send to customers automatically !

BUG : Reccuring invoices not send to customers automatically !

Hello,

We are using Zoho One.
Concerning the Recurring Invoices, we configurated Zoho Books in the way that the Invoices will be " create, Charge and Send"

However, this is not the case.
For example : 
- A recurring was created the 20 05 2021 and charged 
- BUT : any invoice was send to the customer.

This happen very very often and this is a big matter for us.
Thank's to help

Cordialement,
Thomas SENGLER
Gérant