Impossible to use SendinBlue SMTP -> wp_mail used by LTSACP ?

Hello,

I would like to use Sendinblue to send emails from my WooCommerce.
My problem is that an error message says: “You can not use SendinBlue SMTP now because you’ve been declared by the process or plugin.”

After several searches, I decided to disable the plugin one by one until the message disappears.
It turns out that it is the plugin “Login to see add to cart and prices in WooCommerce” which is the cause of my problems.

Do you know how to make sure you do not have this error message while using your plugin?

Thank you