App Clips - TestFlight Qrcode Test

Hello, I'm developing an application that makes use of App Clips, but I don't intend to submit it right now, I'd like the test team to test it in TestFlight first. I already have all the settings in the app and the Domain links defined and the Apple-App-Site-Association (AASA) file configured in the domain, and where in TestFlight it says it is valid. I can also create Advanced Experiences, with different extensions of addresses and banners. However, whenever test users try to point to the generated QRcodes, the following message appears: "this app clip is not currently available in your country or region" sometimes without banner, other times the banner appears.

Can't test Qrcode or NFC Tag situations without the application being submitted to the Store for all users? Are there testing limitations with the Clips and TestFlight app? or to test an app clip with TestFlight do you have to use local experiences on devices, or just manually open the app clips in TestFlight?