Hi! I understand you're having trouble accessing the merge screen in the DesignVille app, and the green arrow button isn't clickable. Let's work together to get this sorted out.

First, could you let me know a bit more? For example:
- Has this issue just started happening, or has it been like this for a while?
- Is this happening only on one device, or multiple devices are affected?
- Have you recently updated the app or your Windows OS?
- Are other buttons or parts of the app working fine, or is this limited to the merge screen?

Meanwhile, here are some initial troubleshooting steps we can try:

1. Restart the App: Close the DesignVille app completely, then reopen it. Sometimes the app can get stuck, and a restart can refresh it.

2. Clear Cache and Data: On Windows using WebKit rendering, you might be using the app via a browser or a wrapper. Try clearing your browser cache or app cache if applicable. To clear browser cache, press Ctrl+Shift+Delete, select cached images and files, then clear.

3. Check for Updates: Make sure your app and Windows are up to date. Updates often fix bugs that could cause buttons to be unresponsive.

4. Try Logging Out and Back In: Sometimes re-authenticating your session can fix access issues.

5. Try Another Browser or Device: Since your browser is WebKit-based, try accessing DesignVille in a different browser (e.g., Chrome or Edge) or device to see if the green arrow becomes clickable there.

If these don't help, the issue could be a temporary bug or server issue with the app. I noticed some users mentioning similar problems with non-clickable buttons in forums like Reddit and Facebook around the DesignVille app, which might indicate a known issue being worked on by developers.

Please let me know how these steps go, or if you notice any other irregular behavior, and we can dig deeper. Are you able to try any of these steps now?