Issue with Attachments in "Email a Thank You Note"

Issue with Attachments in "Email a Thank You Note"

Greetings,
from a few days ago, when registering a new payment and clicking on 'email a thank you not for this payment', Zoho Books does not send anymore my attachments on this email, as before.
It is very important to us, once here, we have to send another official doc issued from the gov portal, outside Books.
Until a few days ago, when registering a new payment, after attach a pdf I could see a message to click below asking if I want to include the attach with the Thank you note, now it is not appearing.
Can someone help?