Can not integrate Forms in Powerpoint

Hi,

Our organization uses Office 365 but we can not use Forms as an add-in in Powerpoint. Our administrators do not allow third-party add-ins (although Mentimeter is somehow added) and apparantly that is why we don't have permission. It seems that Forms add-in is somehow recognized by Powerpoint as third party add-in, and is therefore not allowed...
Forms is however pre-installed as an add-in in Powerpoint (see screenshot in attachments). 

Is this a know problem? Is there anyway that we can still use the add-in?

Thanks a lot