On https://www.texifier.com/licensing/issue-licence (which is probably not publically accessible now that I think about it), there is an option to open the application with the license key included directly.
The URL format for that is:
texifier://licence/XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX
Orion behavior:
Orion cannot open this page
unsupported URL
Expected behavior: Open the application from the deeplink, similar to how it's handled for other uses/on iOS Orion. I do note however that macOS Safari get this wrong too.
I'm not sure what the best approach for this is in order to "catch all" still-missing deeplinks in future occurrences. I'm not even sure if Orion is supposed to know/be able to handle this, since Safari doesn't either. So maybe this is a suggestion and not a bug report?

Version 0.99.126.4.1-beta (WebKit 618.1.2) Build-Datum Dec 14 2023 MacBook Air (macOS Ventura 13.4.1 build 22F82)
Ventura (13)