Hi there! I understand you're seeing a "hit a snag" error when trying to view your card in the Sam's Club app on your Linux device. Let's work together to get this sorted out.

First, just to clarify, are you using the official Sam's Club app through some compatibility layer on Linux, or are you accessing it via a web browser on Linux? This will help me tailor the guidance specifically for your setup.

Meanwhile, here are some general steps that often resolve this issue in the app:

1. Check for App Updates: Make sure your Sam's Club app is updated to the latest version. Sometimes this error happens due to bugs fixed in new releases.

2. Clear App Cache and Data: Sometimes leftover temporary files can cause glitches. If you're running the app on Android emulation or compatibility layers, try clearing its cache.

3. Log Out and Log Back In: Signing out of your account and back in can refresh your membership card info.

4. Check Your Membership Status: Ensure your membership is active and hasn't been reported lost or stolen, as that can prevent card access.

5. Try on a Different Device or Browser: Since Linux isn’t natively supported, testing on a different platform or in a web browser might help isolate the cause.

6. Uninstall and Reinstall the App: If possible, completely remove the app and reinstall to clear any corrupted files.

If you tell me what you’ve already tried or how you access the app on Linux, I can suggest more specific steps.

Also, some users running specialized OS variants (like GrapheneOS) reported that the digital card activation hits that snag—workaround involved using a different OS environment3.

Let me know how you access the app and what steps you've tried so far!