Check the ad account before you read anything
If you manage two businesses, you can be staring at the wrong account - and every conclusion is then wrong.
Campaigns, spend, drafts and reporting all belong to one ad account. The account selector in the top-right header lists business portfolios, other assets and the ad account; the trainer opens it only to show where it is ("First, check which ad account you are inside").
Freelancers and agencies juggle several accounts; this is the cheapest mistake to prevent.