I have a few wow acc in one package. Get ban, if I play at a time on several acc? Is not it strange that just ran X characters in one wow acc? Thanks.

Hi, I recently bought. WRobot Subscription 29.99 EUR per 10 years, Unfortunately, I did not realize that it can not be applied to multiple accounts, it is possible to make a change 

WRobot Subscription (29.99 eur per 10 years) to 

WRobot Unlimited Subscription (49.99 eur per 10 years) ? 20e i suffered.

Please advise me some tricks to sell gold? (I did not ban). Thanks.