Woocommerce and Tinkoff Payment Gateway display order status incorrectly, how to fix it?

Question

WordPress

Good afternoon.
Guys, tell me please, maybe someone faced the same problem?
The problem with the Tinkoff Acquiring plugin Wordpress

engine After a successful payment, the product is automatically sent to the client by e-mail through the plugin on the site. There were already a lot of payments on the site before, but the problem arose precisely with Tinkoff acquiring 1) Screenshot: https://imgur.com/a/v4XjICL On the payment page, when you click on the "Place Order" button --> The client is transferred to the Tinkoff website, where he must enter the card details, and only after a successful payment, the digital product falls to his mail.

- The essence of the problem: When you click on the "Place Order" button itself --> even if the client did not buy in the end, the balance of the product is immediately minus (the product itself is not issued to the client, but the balance is minus), for example, there were 19 products in stock, it became 18.
Screenshot: https://imgur.com/a/hBJWH6h
Just click on Place Order and the balance is immediately minus.

2) The "order status" is badly issued after a successful payment, the goods are issued, BUT 1 order can be in the COMPLETE status and the other go to ON HOLD, while both orders are paid.
Screenshot: https://imgur.com/a/a68ancg
Order example in ON HOLD status: https://imgur.com/a/9pgS4Je
Order example in COMPLETE status: https://imgur.com/a/us8r8Qf

In the settings of the working terminal, there is a notification via the HTTP protocol: and the link Website/wp-content/plugins/tinkoff-woocommerce/tinkoff/success.php is clogged there - perhaps everything lies in it ...

This problem occurs only when paying through Tinkoff acquiring, with other payment methods (for example, Paypal / Skrill / Stripe) there are no such troubles, the balance is not simply minus and all statuses are correctly issued after payment. The problem is in the plugin.