Meter rejects reading multiple objects, but it conformance says it supports it.

Hello,
I'am trying to read multiple objects with 1 query via tcp/ip using python.

Running this code:

obj1 = GXDLMSRegister()
obj1.shortName = 39656
obj1.attributeIndex = 2

obj2 = GXDLMSRegister()
obj2.shortName = 39800
obj2.attributeIndex = 2

objects = [obj1, obj2]

packets = client.readList(objects)

for p in packets:
reply = send_and_receive(p)
client.getData(reply)

gives me an error:

packets = client.readList(objects)
File "C:\Python313\Lib\site-packages\gurux_dlms\GXDLMSClient.py", line 1255, in readList
raise ValueError(
"Meter doesn't support multiple objects reading with one request."
)

BUT when i connect to the reader using GURUXDLMS Director i get this:

Conformance:
Proposed:
Read, Write, UnconfirmedWrite, MultipleReferences, InformationReport, ParameterizedAccess

Negotiated:
Read, Write, MultipleReferences, ParameterizedAccess

So if i got MultipleReferences in Negotiated conformance i should be able to read multiple objects at once - right?