Greens420

I cant think of a way from the profile to stop / control Wrobot blacklisting vendors.
 
That said the only time i have seen it happen was with Bots with a lot in the " do not sell" list and had a lot of those items in the first bag.  It looked like wrobot was failing to sell anything in the first bag and making the vendor as bugged and moving on.
 
Shifting the Do not sell stuff to the 4th bag fixed it for the most part for me.

Second week of February. There are three points to start at: 1. Level 1 (obviously) 2. Level 18/19, if you didnt do any quests in Lakeshire, Darkshire and Wetlands. 3. Level 30, if you didn't do any quests in Stranglethorn, Hillsbrad or Ashenvale. Besides dungeon, class and group quests. You can be on a higher level to start, but if you already did any quests the profile wanna do, things can get messed up.