I manage to set up a Performance Max Campaign using the recommendations of the course. It only had 1 day ongoing and the results are already visible. 

I'm starting the campaign with a low budget of $5 per day because this company is very skeptic about using online ads. I'll be following Ben's recommendations to improve the ad later on to show the company that Google Ads is reliable.

 

 

Even though, the course is kinda old the system has the same options. Some changes in the UI and more options in the Performance Max section but the content of the course is reliable.

----------

1 Week after update. I'm not running ads on Saturday nor Sundays, that's why it went flat. It actually improved on the lasts days. The clicks and impressions have been going up and the cost per click went down (after fixed the conversion cost to around $0.03).