That won't be feasible in the forum since the forum cancels any project once it's dictated to be a scam project. I think the law enforcement agencies only focus on the advertisers if they promote a company which has been classified scam. According to OP's complaint, I'd say if the project is working fine and you promote them it's not a problem. The problem begins when you promote a known scam that's wrong. It's not your fault if a genuine company turned a scam in future. You are not guilty by any means. Look at 1xbit the promoters are getting negative reviews in the forum for promoting a known scam it's actually their fault and can be members can be considered guilty for promoting them, because they help in deceiving people.

Let's take it to the outside world, celebrities like DJ Khaled, May weather etc in 2018 was charged for promoting a scam project using their social media platform. These people are influential in the society and can easily be detected if they do anything fishy with their influence on people. In such situation they'll be considered guilty and fined for misleading their followers.  Here in the forum, you are not having followers, but people can trust you, therefore trusting any company you promote here too, if need arises for investigation on you for promoting a company, you'll be charged according to what you got paid. Though, it's rare because how would all the participants get charged to pay regarding the difference in locations and identity.