Hi guys,
I successfully turned my system back online.
1. Connect to the WiFi network of the SunSynk logger using its network (EAP-....) PW: 12345678
2. Load in the browser 10.10.10.1
3. Scroll-down to Wlan connection section and remove the checkbox Using the following static IP address. Click on Save button.
4. List all available WiFi networks by clicking on Scan button. Select yours, and re-connect to it.