Thank you for the clarification.
Yes I purchased the script a little while ago, tried the master worker and it did not work. This was probably in 2017 and I did not make much of an attempt to really try to make it work since I was so busy IRL.
When I go to the SDN scripts page, it does NOT appear in my collections page. I will re DL the client and look for it there.
UPDATE: Downloaded the client, logged in stealth injection, script appeared in the script selector. Not going to attempt it until I am ready to use mirror, but will keep updated if and once that occurs. Thank you for the detailed info