ARC Lighting

What type of generator are you using make and model. Program 03 on inverter settings ensure APL is selected and not UPS it gives you a wider input voltage range. As @ARC Lighting suggested your frequency needs to be as close as possible to 50hz. Do you have a DMM than can measure frequency then adjust the covenor to be close to 50hz possible with load connected to the generator. You need to try and get a happy meduim between load and no load.
Thanks for the input @frivan but try to refrain from the sarcastic last sentence remark above. In a different post(amplifier problem) you also remarked about electricians that uses testers and insulation tape and are not really qualified to test THD bit disrespectful to the profession unless i am just a tad sensitive

@ARC Lighting ,
You are able to set the Charging Amps to say 70 or up to 190A's Max, but you need to remember a few things:
1) You need to back that up with enough PV (MINUS your LOAD at that stage). Hence I would also suggest you make sure the inverter is set to Battery Priority. You have approx. PV = 9000W (after losses) available.
So with a 5kW load, that leaves only 4kW to go into the battery. That's only 77A worth of current, and it's only available for a few hours around midday, let along a cloudy day like today.
Adding the 2kW Geyser bring the CA down to 38 A. It's going to take a long while to get that Battery to 100%, if at all.
2) Taking the size of you battery in consideration, I would set the CAmax to 60A (20A per 5 kWh, purely from a longevity perspective. You do want to make them to last 10+ years, I hope !

Yes. I installed a new system at our factory three weeks ago. See screenshots. I am making 55KW a day on the newest 8KW Deye Hybrid with a Volta Stage 4.

Get another Electrician. They should check compliance of your electrical system and inverter installation against SANS10142-1. You could get a ECSA registered person to sign off on NRS097-2-1 compliance. 

Solarman dongle and the solarman cloud does allow for remote control - its clunky but it works.