Adobe acrobat free trial?

Why not stick with the always free Apple Preview, or Adobe Acrobat Reader DC? Adobe Acrobat Pro does have a brief free trial, then it will cost you over $230/year for its subscription, and it is a PITA to fully uninstall the trial version.

If you do not have a need to change the original content in a PDF, convert PDFs to Word docx (which Word can do), or save PDFs in PDF/X format, then you can get by just fine with the aforementioned free PDF reader choices.

Note: If you profile is correct, and you want Adobe Acrobat Reader DC ,then you should click the more download options link on that Adobe Reader site as current versions are not supported on macOS Mojave, and you will need to designate the version for your operating system.

Where are you getting these notices?

FWIW, Adobe Acrobat Reader DC is still free, Adobe Acrobat Pro is not.

It's just an ad within the free Reader. If you have no use for the Pro features, simply ignore it.

I kind of wondered about that wording, too. The blue button is the only thing I've ever seen for the occasional times I open the Reader.

I thought maybe it would be notifications, but the Reader doesn't add itself to the Notifications section of the System Settings, so there's nothing to control or turn off. Can't see anything in Acrobat's own prefs, either.

That's kinda why I was asking about where the notices are. 😎

I know. It's just one of those "always present" nags to upgrade.

Assuming that's what the OP meant by "notices". I'm not fond of the ever present offers on Music and Prime Video, etc.