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I have had a Givenergy system (4kWp Array with 9.5kWh Battery and Gen1 Inverter) since July 2023. I quickly realised that the GE App could not automate 2 simple Time Windows and was waiting for new firmware to fix it. So for the first 2 years I was manually enabling the Export settings via the App at 4-7pm to benefit me on the Octopus Flux Tariff which I believe was one reason for the creation of WW, thankfully. About 6 months ago I became aware of 3rd party Web based Apps that could set and forget my simple automations. This worked well till early last November when the clocks changed and I uploaded battery firmware 3020 that showed up on the Portal as an update. Since then my Web automation became unreliable and I reverted back to manual control and started to study the portal in more detail believing I could somehow develop the right register settings to make automation work within the Portal. After many trials and errors I got nowhere and called GE for assistance. They did try to help but it was only to upload new Battery firmware 3022 which made no difference. GE are still thinking about it. While I was waiting (1 month now) I stumbled upon Wonder Watt which gave me some hope as it seems to be well known amongst Solar/Battery/EV users and looked fairly easy to set-up so here I am 13 days into the 14 day free trial and working to get a workable setup that is reliable. I think I'm almost there now so I'm posting this incase other users have solved the problem in a better way. I have been trying to get a reliable WW setup to work for 13 days and had some success but not 100% reliable for the 4-7pm Export Window. The night Import 2-5pm seems to work without a failure but the 4-7pm works maybe 2 days out of 3 and fails by refusing to Export and leaves the battery idle/waiting. I can see WW issues the commands correctly and the Portal says they were written correctly but Export doesn't always happen. I have checked the inverter and battery peak operating temperatures during Import and Export and they are typically 46 and 24 degC respectively and well within the recommended. I have noticed on the battery chart that the temperature can rarely drop to 0 degC which suggests a comms packet loss but when I check the dongle signal strength at the Router it's consistently 81-86% so comms error is less likely for my Export failures. While thinking about Comms it seems that every 5 mins the Inverter can be busy sending data to the GE Server or the GE server is issuing schedule instructions to the Inverter. To avoid a possible API command log jam I have decided to offset my Import and Export Windows slightly away from the busy heartbeat times. Here is where I am at today which seems to be working but I need to see it running for 10-20 days without manual intervention to be sure it's a solution. Here are my window settings :

02:02 to 04:58 - Morning Import, Target SoC 100% (It has till 2pm to complete a battery recal if annoyingly invoked)
14:02 to 15:28 - Afternoon Import Top up on cloudy day Target SoC 95% (We dont want a recal now to lock up battery)
16:02 to 18:58 - Evening Export that starts if SoC > 30% and stops when SoC<= 20%.
Today this worked but I just have a couple for WW based on what I saw in the GE Portal remote logs.
The Afternoon Top Up Import starting at 14:02 was initiated by WW as 4 commands to my Inverter at 14:00:25. Do I need to have a bigger time offset to be sure I avoid the 14:00 busy time? I had expected the WW Top up command to be initiated at 14:02 or after but not earlier. When WW set up the Evening Export command I noticed it was initiated as 4 commands starting at 16:02:01 which is more what I had expected.
Thanks in advance for any feedback good or bad.