Hi there! I see you're encountering an "invalid connection" error when trying to log in or create an account on the ZBD app. That can definitely block access, so let's work through the issue together.

First, just to make sure we're thorough:

1. Are you connected to a stable internet connection? You mentioned the error, but have you tried switching between Wi-Fi and mobile data?

2. Did this issue start suddenly, or has it been persistent from the first time you tried logging in or creating an account?

3. Have you tried reinstalling the ZBD app, or clearing any cache if possible?

Let me know what you’ve tried so far. Meanwhile, here’s a step-by-step approach you can try:

Step 1: Check your internet connection.
- Switch between Wi-Fi and mobile data to see if the issue persists on both connections.

Step 2: Close and restart the app.
- Sometimes a fresh start helps clear transient connection glitches.

Step 3: Restart your device.
- This refreshes network services and app states.

Step 4: Clear app data/cache if possible.
- On Windows devices using WebKit, this may mean clearing browser cache or resetting any local app data if using a desktop version.

Step 5: If you are using any VPN, proxy, or firewall, temporarily disable them as they might block the connection to the ZBD servers.

Step 6: Update the app to the latest version if available, as some connection-related bugs might have been fixed in recent updates.

Step 7: If none of the above work, there might be an issue on the server side or with your account registration. You can reach out to ZBD support directly at [email protected] for specialized help.

From similar reports, users found that switching connections and reinstalling the app often resolves this "invalid connection" error2 1.

Could you please tell me what connection you are on and confirm if you've tried any of these steps already? That way, I can guide you more precisely.

Are you satisfied with this solution guide so far?

1. I have tried home WiFi, work WiFi, 5G & LTE connections, all with same error. 2. I can't remember every successfully logging in. Has happened repeatedly over last 24 hr. 3. I uninstalled and re-installed, still had same error. I also "force stopped" and cleared data.I will try restarting my phone.

Thanks for the details and for trying multiple networks and reinstalling the app—that definitely helps narrow things down. Since the “invalid connection” error persists across different connections and after reinstalling, it suggests the issue might not be on your end but possibly related to your account or the app’s server.

Here are some targeted next steps for this scenario:

1. Restart your device as you planned. Sometimes this can clear network or app-token glitches.

2. Check if your account might be temporarily blocked or flagged. Some users have reported that persistent login errors can occur if the system detects account issues or security flags. There might be automated blocks that prevent login for suspicious activity or system errors. Since you mentioned you haven’t logged in successfully yet, this could be a protective block.

3. Try using a different device if possible just to see if the account can be created or logged in from there. This helps rule out device-specific issues.

4. Contact ZBD support directly at [email protected] or use the contact form on their site (https://zbd.gg/z/contact) explaining your issue with the “invalid connection” error after trying from multiple networks and devices. Their team can specifically check your account status and server-side logs.

5. Monitor for any announcements or server maintenance updates. Sometimes connectivity issues result from temporary server problems not reflected immediately in the app.

The persistent "invalid connection" error over multiple networks and even after app reinstall/tweaks indicates it’s very likely related to your account or server-side validation blocking your login attempts1 2.

Please try restarting your device and, if that doesn't help, contacting ZBD support with these details. Let me know how it goes or if you want me to assist further with composing your message to support!

Are you satisfied with this guidance so far?

Thanks. Restarting my phone... same error. I'll email support. Thanks for the address

Thanks for the update! Since restarting didn't fix the issue, your plan to reach out to ZBD support is definitely the right next move.

To add some helpful context from recent community troubleshooting around the “invalid connection” and account block errors you’re seeing:

- Users experiencing persistent login errors like "invalid connection" or being "general blocked" often need to check whether their accounts have been flagged or blocked by the system. Sometimes, this happens due to security measures or irregular activity detected by ZBD’s backend.1
- The recommended troubleshooting includes verifying stable internet connectivity, reinstalling the app (which you did), and confirming account status through support.2

When you contact support at [email protected], you might want to mention:
- All the connection types you tried (home/work WiFi, 5G, LTE)
- That you’ve reinstalled and cleared app data
- That you restarted your device
- You’ve not been able to successfully log in since first trying

That info helps them troubleshoot your specific situation faster.

If you’d like, I can help you draft a message to support or guide you through any other issues you encounter while waiting for their reply. Just let me know!

Are you satisfied with this guidance for the moment?

What to do when reinstalling ZBD app doesn't solve login problems?