GUADEC 2019 : Problem on registration page!

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From: Anastasios Lisgaras <[email protected]>
To: [email protected]
Message-ID: <[email protected]>
Subject: GUADEC 2019 : Problem on registration page!

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Hello,

Unfortunately, I try to sign up and buy my ticket for this year's
conference and I can not.
When I was trying to buy the ticket from the mastercard card from
=C2=ABNational Bank of Greece=C2=BB ( https://www.nbg.gr/en )

Returns the following error :
"The card was declined"

But when I put my Revolut card details, the purchase was successful!

Why is this happening ;
Is there a problem on the page?
Is there a problem with Greek banks?

Let me note, this is the first time when I have an online purchases
problem with my card ( of =C2=ABNational Bank of Greece=C2=BB ).
I have made too many online purchases with this card and I have never
had a problem.

I am at your disposal if I can help!
I hope the best for this year's conference!! :)

--=20
Kind regards,
Anastasios Lisgaras
Open Source Software Engineer.
Cell phone: +30 69 55 83 17 92
Keybase: https://keybase.io/tas_sos
GnuPG Fingerprint: 5003 03E8 CA50 1878 06D9  3AEA FC25 8330 FE34 8E41


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