No order is possible? The "purchase" button is grey?
Please note that we are currently experiencing numerous bot orders, where spam, advertising, or links to unsafe/illegal content are entered as the delivery address or "order note," and sent from our shop to uninvolved email addresses as order confirmations.
Therefore, we must implement various security measures in our shop to prevent or at least make it more difficult for bots to complete orders. For this purpose, we use, among other things, the "ReCAPTCHA" service. Order completion is only possible after a captcha has been solved.
This opens as a pop-up and usually looks like this:

If you have ad blockers or other plugins such as NoScript installed in your internet browser, or if you have configured the browser itself to suppress all pop-ups, you will not be able to complete the order.
If necessary, temporarily add the Google Recaptcha service as an exception, pause the plugins for the order, or use a second browser.
If it also doesn't work in a second browser with the default settings, it's possible that a VPN, firewall, or other security measures in your network are preventing redirection to Google's "reCAPTCHA" service. Unfortunately, this also applies if you are from a region where internet access to all Google services is blocked.