photography plan problem with billing

Saying "But Nothing" means basically Nothing.

What do you mean by But Nothing? What happens?

Have you tried a Credit Card? 

miltosp46854073, good evening.
There were various questions before, but please check the purchase screen again.
Depending on the nature of the error, you may be able to make a successful purchase by entering the postal code correctly.

https://community.adobe.com/t5/get-started/quot-postal-code-is-incorrect-quot-unable-to-buy-a-lightroom-classic-plan-in-greece/m-p/10564418

Locations http://www.adobe.com/content/dam/Adobe/en/products/creativecloud/cc/pdfs/cc-availability-matrix.pdf
-Adobe Resellers http://adobedealreg.force.com/PartnerSearch?lang=en

Moving to the Get Started forum from Photoshop

Try contacting Adobe Customer Care