LED definitions not found on Victron toolkit (should i be worried)

Since starting up my installation, I’ve had an LED definition that doesn’t appear in the Victron toolkit.
A brief explanation of my installation.
It’s a 3-phase(3x400V+N) system consisting of:
3 x Multiplus 2 48/3000/35/32
3 x MPPT 250/60
3 x Pylontech US5000C
1 Cerbo GX

The phase rotation is correct when the inverters are off.
And according to VE config, the 3-phase configuration of the inverters is also correct.
The grid code is also correct (Belgium), but
after a while, when the inverter starts up, these LEDs start to light up.

The “Mains on” LED is blinking
“Inverter on” LED is on (not blinking)
“Bulk” LED is on (not blinking)

My EM540 grid meter also has an icon indicating that the connection needs to be checked. (Phase rotation) After checking, this is also OK, but the error message continues after starting up the inverters.

Could it be that the inverters aren’t synchronized with the grid?

They are working normally (charging batteries in the sun).
Discharging the batteries to generate electricity in the evening.
The only thing that worries me are those LED indicators.

blinking main led is waiting for ac connection, so i assume you have ac in issue, could be the phase rotation

Everything is connected correctly.
The AC connection is fine (230V was measured across each inverter from the distribution board). Phase rotation has been measured and is also correct.
And yet, I still get that LED indication.