For AR Universal with three.js URL parameters are lost in the link.
If we use link with version:
In this case, the parameters are passed and we can get them.
If we use link without version, link is auto redirect to link with last version, but the parameters are lost:
Since we need to use a permalink for the qr code, we are forced to use a link with parameters and without a version.
You need to make changes to your redirect rules (in htaccess or elsewhere).
Then the problem will be solved.