Hi! Thanks for reaching out about the "Can't Reach Server" error on your SSA WiFi Frame. I’d like to help you get this resolved. Since your router seems perfect and you don’t have any 2.4GHz issues, let’s look into some other possible reasons and fixes.

To start, can you tell me:

1. Are you connected to the internet without interruption on other devices?
2. Is your SSA WiFi Frame connected to the correct WiFi network? Sometimes it might connect to a guest or different network.
3. When does the error typically occur? Is it random or during specific actions?
4. Have you tried restarting the SSA WiFi Frame itself?

Meanwhile, here’s a step-by-step to try:

1. Restart the Frame: Power it off for about 30 seconds and then back on to refresh its connection.
2. Confirm Internet Access: Check other devices to ensure there’s steady internet.
3. Network Settings Reset on the Frame: If there's an option on your Frame to forget and reconnect to WiFi, try this. It refreshes network credentials.
4. Check for Firmware Updates: Sometimes, the Frame’s firmware needs updating to maintain server connections.
5. Verify Server Status: Occasionally, the service server might be down for maintenance. You might want to check SSA’s official site or social media for any outage announcements.

If you can provide a bit more about when and how the error shows up, we can pinpoint it better. Does that sound good?