App BILnet - "Invalid CORS request" error

Pre-requisite:

• Having a bank account at BIL (Banque Internationale de Luxembourg)
• Having a valid LuxTrust ID.

Steps to reproduce:

1. Install BILnet app. BILnet https://play.google.com/store/apps/details?id=com.bil.android
2. Start the "Join" procedure (you already have a BILnet account)
3. Enter you Luxtrust credentials
4. Validate your action with a valid Luxtrust app (on the same phone or another one)
5. Observe

Current result:

• A blank page appears on BILnet app.
• Long tap and choose "select all" to make appear the hidden text (white text on white background).
• The text "Invalid CORS request" appears.

Expected results:

• Like on Google Android, the app should load properly.

This issue does appear on my Pixel 5 with Google Android.

My phone:

• OnePlus 8T (KB2003)
• eOS 3.2 a14