Persistent.... Checkout error

I want to upgrade my Devonthink to Pro, but it keeps showing me the message: “The checkout server returned an error. Please try again later.” What’s going on here?


It’s been ongoing for two days now…

As we do have purchases, the checkout server (run by paddle.com) is functioning per se. Do you use browser extensions or a firewall or DNS blocker that might block it? A screenshot might help, best per private message, so that we can check what the cart looks like and how it looks in the backend here.