Nano Banana and Photography Membership (Photoshop, Lightroom ed)

Hello,
i have a paid membership.
I do have (standard) generative credits.
Now i want to try Nano Banana Pro .
Unfortunatly i receive a message  (Free generations used) . But in Dutch)
I have to upgrade my membershop to use the PREMIUM functions.

But I thought Nano Banana was FREE.
Am i wrong?
And can I. by premium functions within my membership.
What to do?