Hello! I see you’re using the /e/OS custom ROM on your Android 10 device, and recently you can’t pay for tickets anymore through the SBB app. Let’s try to get this sorted out together.

Custom ROMs like /e/OS sometimes affect payment apps because they may lack certain Google services or security features that payment systems rely on, such as SafetyNet or secure hardware validation. These checks are often required by apps to securely process payments.

Here’s a step-by-step approach we can try:

1. Check App and Payment Method Updates:
Ensure your SBB app is updated to the latest version. Also, review your stored payment methods inside the app to confirm they are valid and have no issues.

2. Verify /e/OS Google Services Compatibility:
Since /e/OS aims to be privacy-friendly, it might not include the full Google Play Services framework or SafetyNet certification, which many payment providers require. Check if your ROM has microG installed and if SafetyNet passes. On /e/OS, sometimes microG or SafetyNet checks fail, blocking payments.

3. Try Alternative Payment Methods:
If you use credit/debit cards, try adding another or switching the payment option (e.g., from card to PayPal if supported) to see if it works.

4. Clear Cache and Data of the SBB App:
Go to Android Settings > Apps > SBB app > Storage > Clear Cache and Clear Data. This can resolve temporary glitches.

5. Reinstall the SBB App:
Delete and reinstall the app; this can reset configurations that might get stuck due to ROM differences.

6. Check for Any Root or Security Flags:
If your device is rooted, or the bootloader is unlocked, that can prevent some apps from working with payments for security reasons. SBB app may block payments in that case.

7. Look for SBB Community or /e/OS Forum Experiences:
Sometimes users post specific fixes or workarounds for custom ROM payment issues. For example, some suggest installing Magisk modules that restore SafetyNet or using specific microG configurations1 3.

If after all these steps the problem persists, it’s likely due to missing or failing security validation required by the payment process on custom ROMs. In such cases, using a device with official ROM or contacting SBB at [email protected] for alternative payment solutions may be necessary.

Please let me know which steps you have already tried or if you want me to guide you through any in detail! Are you satisfied with the solution I provided?