Hugh problem with PayPal and creditcard in German webshop

[droneclass]

Hi everyone,

Here Sem from Drone Class.
We are a drone flight school from the Netherlands and are running several Shopify webshops.

Since two weeks we have been experiencing a very strange and hugh problem concerning
our German webshop: https://eudrohnenpruefung.de/

The problem: Our customers are not able to pay with PayPal or creditcard.
We use Shopify Payments and a PayPal connected business account.

Concerning PayPal, we have two options in the check-out:
The PayPal Express button and the normal PayPal, you can choose from the list of payment options.

The problem is that if an user select PayPal from the list of payment methods, the pay button doesn't work. When clicking on it, nothing happens. So it's impossible to order. The same for creditcards. See image and video attached to my message. You see that PayPal is selected and the "Jetzt bezahlen' button in the check-out. That button is not working.

I heard that some other Shopify webshops - selling online in Germany - are experiencing the same trouble. If you read this and you have the same problem, please reply!

Best regards from the Netherlands,

Sem van Geffen.