For Dutch people here is someone who managed to open port 80 and 8080 again. So seems like the local app is still running on the inverter but you can’t access it locally anymore, because of those ports being blocked.
Dutch post how to open the ports again (I didn’t try it myself yet): [SolarEdge] poort 80 en 8080 openzetten op het LAN netwerk. - Duurzame energie en installaties - GoT
Update: I didn’t go that route afterall.
Finally Modbus TCP working! http://172.16.0.1 and click on the “Communication” menu item
Select “RS485-2”
Choose Protocol “SunSpec (Non-S…