WiFi Dongle reset help

Hello.
A few days ago I started suffering from an internet outage, turns out my router was causing issues so I've decided to scrap it. Meanwhile, I'm using another router. This means I need to change the WiFi dongle settings so that it connects to the new router, but this has been causing me problems.

I figure I must be doing something wrong. I do need to get this sorted as I've already lost nearly 7 days of portal data because the inverter is offline (as in not connected to the internet, not actually powered off).

I've seen a couple of other posts about resetting the WiFi dongle which is connected to my AC3.0 Inverter so I've tried those steps to connect to the new network and "restart the module", however, when I connect to the SSID of the dongle on my Windows PC, it's telling me there's no internet connection.

The only thing I haven't done is power off the system as described in another post.

I phoned GivEnergy Support earlier and the guy told me to plug the dongle into a laptop to try and troubleshoot. Before I unscrew the module, please can someone tell me if powering off the inverter and/or battery is necessary?

Thanks in advance!

Should have also said that while connected to the dongle SSID on my phone, I dont get any connections/data through the GE app (using iOS 16).

Edit
disregard, need to learn to stop speed reading.

Edit 2
I would power off the inverter for a few seconds then power back on, I have had portal data go AWOL 3 times so far, once it came back on its own quickly, second time it was out for a few hours and third it was awol for nearly 2 days so I manually reset the inverter by powering it down.

Restarting the module doesn't restart the inverter itself so id probably power down the inverter myself for a short period then turn it back on.

I waited about 30s myself, if that fails there may be a bigger issue.

Jellybaby thanks for your reply.

I managed to some how fix it.
I don't know if it caused a conflict or the connection was 'hanging', but I did end up shutting down my instance of Home Assistant, which has 'GivEnergy Local' installed.

Here are the steps I took:

1. Reset the dongle (either through the software interface or through the button under the cover at the bottom, I reset using the software)
2. Shutdown Home Assistant.
3. Unscrewed the GivEnergy USB WiFi dongle and unplugged it from the inverter (whole system was left powered ON)
4. Plugged the dongle into a USB port on my Windows 10 device and, using WiFi, connected to it's network SSID (beginning with 'WO')
5. Made it secure by specifying it to use WPA2-PSK and supplying a password.
6. Restarted the dongle by clicking the button in the management software.
7. Connected it to my home network WiFi SSID by searching for the network and selecting it, then entered the WiFi password in the textbox then saved/applied those settings.
8. Restarted the dongle by clicking the button in the management software.
9. Unplugged the dongle from my Windows device.
10. Plugged back in to inverter. Dongle flashes blue. Waiting around 10-15 seconds (held my breath a little)
11. Went onto my phone, opened the GE app and tapped 'Home'
12. Connected! Dongle light remains solid blue.

I'm not going to continue rescuing my home network, and booting up Home Assistant again to see what happens.

Maybe it was just a setup issue to new network, if its working to upload data to portal now I see no harm in trying home assistant if taking out and putting it back in helped if you had been using it without issue before, seems like it was just an issue after network switchover.