inverter connection problem

after a new wifi my Inverter hasd stopped giving out the serial number for the wifi dongle. I have tried resettingh & altered dps after advice from Givenergy wattsapp but still nothing. any ideas? cheers

Best thing to do with new router is to login to it and cahnge the SSID and password to that of your old router.
That way everting that used to connect will connect automatically.
You may have to turn off 5GHz until the dongle connects. Can turn 5GHz back on when connected.
Good idea whilst in the router is to find the dongle- should be HF-21 or similar. Assign it a fixed IP address as that seems to make reconnection more stable.

https://kb.givenergy.cloud/article.php?id=1&oid=1

Quick search of forum
https://community.givenergy.cloud/d/1351-router-change

BowenR So everyone is clear what you have and have not done so far.

1. You switched ISPs and got a new router?
2. Presumably the new router has a new network name and password?
3. Did you make any attempt to update the network name and password on the inverter/dongle?
4. Is the access point for the inverter/dongle currently broadcasting?
5. Do you know the network name and password for your old router? There are workarounds that we might be able to use to get you set back up on your new router.
6. Does router new router allow you to temporarily switch off the 5GHz network?