Ask a friend who can pay PayPal.Send an e-mail to:
dn1hi@gmx.de
and request a key !
J.Walter

If possible, can I pay with a prepaid card such as a Google play card or Amazon gift card? I don't have a phone number so I can't use Paypal etc.

I tried to upgrade my ATS-25X2 from firmware version v5.3 to v4.2, not knowing that v5.3 is the free version and v4.2 requires purchase.　I suppose I can revert the version, but I want to use the new version, so please let me purchase a license key!
I am in Japan.
I don't know what payment methods are available, so it would be helpful if you could list the available payment methods as well.
Thank you in advance.