magento2 – Magento 2.2.4- The order confirmation email is not sent automatically

So I'm faced with a problem, that order confirmation emails are not sent by magento2 for COD / checkmo orders

Every time you open an order, it shows (The order confirmation e-mail is not sent)

But when you click on the Send an email button, the mail is sent immediately.

I have checked the following settings:

Stores> Setup> Sales> Sales Emails

Asynchronous sending: deactivate

Order, order comments, credit note, etc .: On -> YES

Looked on the Internet, each solution revolved around these parameters only, no solution. please help!