Hi @Peter_Kapitola,
Welcome to the Asana Community Forum! We are happy to have you here.
Are you using Outlook online or on your desktop? If you are using it online, you will need to install Asana on the desktop version separately. To download the Asana plug-in for desktop, simply go to the Outlook store, search for Asana, and it should install in seconds.
I have attached a screenshot of where you can find the Asana plug in for desktop once it is downloaded.
I have also attached a few helpful articles, as well as the Asana support team in case this is a bug issue instead.