Avoid duplicates

• Bug is not mentioned in the FAQ
• Bug is specific for Android only, for general issues / questions that apply to iOS and Android please raise them in the documentation repository
• Bug is not already reported in another issue

Technical details

• Device name: Samsung Galaxy S21 5G, Samsung Galaxy A40, iPhone Xr
• Android version: 11
• App version: 2.13.2

Describe the bug

Trying to validate vaccination certificates for entry to France (13 rules present) on Android phones leads to the message "Ihr Zertifikat konnte nicht vollständig geprüft werden". With the information that the Manufacturer "Biontech Manufacturing GmbH" can not be validated by the Rule VR-FR-0009 (1.0.0). But the same validation for the same certificates succeeds on IOS, suggesting it's an Android-specific issue.
I tested it on two different Android Phones with two different Certificates (both 2x Biontech).

The Issue I'm reporting is the difference between IOS and Android behavior. I don't actually know if my certificates are faulty or the Android App. But I opted to report this Issue in the Android App Repo since the french "TAC Verif" App for the validation of vaccination certificates also correctly validates the certificate like he IOS App does.

Steps to reproduce the issue

1. Go to 'Zertifikate'
2. Click on the Certificate to check
3. Click on 'GÜLTIGKEIT PRÜFEN'
4. Select France as the Country an click 'PRÜFEN'

Result on Android:

Result on IOS:

Expected behaviour

I expect the validation to either fail on both Android and IOS or to validate the certificate in both cases.

Possible Fix

Additional context

I currently only had vaccine certificates with 2x Biontech available to test with. I don't know how the rule behaves for other manufacturers.