Hi there! I understand that you're having trouble logging into the Sezzle app on your device. Let’s get to the bottom of this together.

To start, could you tell me:
- Are you seeing any specific error message when you try to log in?
- Are you using your phone number, email, or a PIN to sign in?
- Have you recently changed your password or PIN, or requested a one-time passcode?

Once I have a bit more info, I can guide you through the easiest fixes first.

Meanwhile, here’s a straightforward checklist to try:
1. Check your internet connection: Ensure you have a stable connection on your Android 10 device.
2. Restart the app: Close Sezzle fully and reopen it.
3. Clear Cache: On Android, go to Settings > Apps > Sezzle > Storage > Clear Cache. This can often fix login glitches.
4. Update the app: Make sure the Sezzle app is updated to the latest version available on your app store. Sometimes outdated apps have login issues.
5. Reset your PIN or password: If you’re using a PIN or password, try resetting it at sezzle.com/pin or through the app’s “Forgot PIN” or “Forgot Password” option.

If you’ve already tried some of these steps or if you experience a blank screen or no response, please let me know what exactly happens. We can try more advanced troubleshooting or verify if there are any ongoing issues on Sezzle’s end.

Does this help get you logged in, or is the problem still persisting after these steps?