We are working on moving over to mobile tickets and using the html ticket templates, but we found if a user has their cell phone on dark mode, the QR barcode won't display properly. We can't seem to figure out how to get around this (none of us are great with the html templates yet...) Has anyone else found a solution? If it is viewed in a browser it works fine, just not in the visitor's email.
I had some success by setting the color of the QR code to a medium blue color. This way, even when a dark-mode theme is applied the QR code is, at least, still scannable. It's not a perfect solution and it may not be suitable for your application, but it does result in a scannable ticket. You could probably tinker with the color to find something more suitable to your application.
That is great! Thank you!