Are your customers iPhone users?
And have your paid media marketing campaigns been performing worse recently?
Then you may already be suffering the consequences of Apple’s iOS14, first launched September 2020.
As you (probably) already know, Apple launched a privacy update that requires users to give explicit permission for apps to collect and share data from their iPhones.
In practice, users meet a pop-up window prompting them to ‘Allow’ or ‘Ask not to track” their activity across apps and websites.