First of all – great plugin! For trying things out, you are offering a sandbox link via WordPress.net. However, I get the following error message when opening the link on your website:
Hi Hauke! Thank you for opening a support topic telling us about this 🙂
Unfortunately, I cannot see the screenshot in your post. Could you try uploading it again, please? I tried opening the sandbox both using the “Live Preview” button on the WP.org page and our own website and it seemed to work. It would be really interesting to see an error message and be able to fix it!
Thanks! Paul
(Note for moderators: I believe this to be on-topic for the WP.org Forums because it also concerns the “Live Preview” button for the official wp.org plugin page – it’s the same link)
@threadi Thanks for the hint! A message that this is not supported would help before submitting the post because copying and pasting a screenshot just works.
@handsomehauke Thank you so much! I’ve reproduced the issue and fixed it. Please try it again and if it works, feel free to resolve this support topic 🎉