Saw that this has been an ongoing issue for awhile now.
Yesterday I downloaded aero, played around with it, and was able to use it seemlessly. Since today, I cannot create a link to ANY of my projects to save my life. Even the ones I already created a link for yeterday, and since than made absolutely no updates to them.
Oddly enough, the already published QR codes for my project from yesterday are working seemlessly, I can view my models in AR on my phone, yet I can't create a new link for them.
Seems like an error. The "Unable to create link" appears instantaneously, when I click the button. Like, if I wanted to open a website without any network connection.