I have two sentences which in my eyes mean the same, but I don't know which one is the proper current tense is in German.
Zahlung information aktualisieren, I think this means, Refreshing payment information
Zalung information werde aktualisiert, I think this means, Payment information is being refreshed.
What would be more proper to say that the payment information is being refreshed, which reflects a current tense, because this is the message customers will see whilst that action is being performed.