Invoice not attached

It still doesn’t work if I disable wp rocket.

Yes I can :

Woocommerce > settings > email :
Emails are activated (and successfully sent) for :
New order
Cancel order
failed order
order in waiting
order in profress
order terminated
order refunded
client notre
reinitialisation of the password
new account
order delivered

PDF invoices > documents > invoice settings:

Enable check
attached to :
new order (email for admin)
waiting order
order in progress
waiting terminated
invoice client / detail of order (manual email)
delivered order

disable for : none

Show deliver adress : yes
Show email adress : yes
show phone number : yes
Show date on invoice : invoice date
show invoice number : invoice number
allow invoice downland from my account : always
Show the invoice number in the column of list of order : yes
disable for free orders : no
always use recent settings: no