Invites from Outlook have no Teams toggle

Dear Community,

I have tried to find a solution for quite a while, but without succes. I have a business account for Microsoft 365. When I start a new meeting, however, there is no toggle to include as a Teams meeting.

I am allowed to send Teams meeting through Teams and the add-in for Teams in Outlook is also switched on. Finally, outlook.office.com also allows me to send Teams invites.