Hello Jaime, good day
That’s right, I’m using version 2.0.10 of WC vendors and Version 4.9.7 of wordpress.
I do not receive any error, just notifications to the seller do not arrive.
However, when I register a new salesperson if the mail arrives from your register.
In my Cpanel check the delivery tracking, apparently if they are sent to the mail of the seller [ Redacted, support is not offered via email, Skype, instant messenger, etc. ], however below this report the following appears, I send link to the image
https://www.dropbox.com/s/3ssa3k0u00zaxnp/imagen%20seg%20correo%20gmail.JPG?dl=0