@mardoqueo you have not saved your form properly, the textarea has not been inserted into your form. Please start your own thread. This is WordPress forum policy.
@g-manucharyan please start your own thread. This is WordPress forum policy. thank you apologies for that reply, I didn’t realise you are the one who started this thread.
So looking at your website, the row and column HTML markup is printed but the textarea fielf is missing altogether, as if it was never printed by the CF7 plugin.
It is possible that the [textarea] tag itself has been stripped by the CF7 plugin, or your theme is removing the field for some reason.
Eitherway, if you have inlcuded your [textarea] tag in your form editor, then the issue is unlikely coming from this plugin.
Can you try to disable this plugin and see if the field appears?