Nano Banana (Gemini 2.5 Flash) model unavailable in Photoshop Beta

Hello Adobe Beta Team,

I’m an active Firefly Premium subscriber with over 2000 generative credits, currently using Photoshop Beta v26.3 on Windows 11.

When I try to generate with the Nano Banana (Gemini 2.5 Flash) model in Generative Fill, I consistently get the following message:

> "El administrador del sistema no permite el acceso a esta función en este momento. Póngase en contacto con el administrador para obtener más información."

This happens even after:
- Changing my account region to the United States
- Logging out and clearing UXP / Creative Cloud cache
- Reinstalling Photoshop Beta (latest version)
- Verifying my Firefly account and available credits

Firefly Premium and Flux Kontext work fine — only Nano Banana is blocked.
It seems that my Adobe ID has not been whitelisted for the Nano Banana test group.

Could you please verify my account and enable access to this model?

Thank you very much for your help.

Best regards,
hola@altura.ad