Wio LTE GNSS antenna circuit not according to reference in datasheet?

I’m using the Wio Lte Cat.1 v1.3b (EC21-E) and was trying to get a fix on the integrated GNSS without success so far. I’m trying with the included GPS antenna, outside, under open sky and for over 10 minutes. But its just keeping responding +CME ERROR: 516 - which according to the datasheet translates to “no fix yet”
I confirmed the ANT_POWR is enabled. Then sending following AT commands and successfully receiving OKs:
AT
ATE0
AT+QGPSEND (here of course I get an error if it was not enabled before)
AT+QGPS=4,120,50,0

and then every 5 seconds:
AT+QGPSLOC=1

Now I was wondering why the PCB layout is so different from the actual recommondation of Quectel. So before I’m going to take the solder-iron and try to get it closer to Quectels suggestions: might there be anything else what I missed, what might keep the GPS part of the EC21 from working??

Happy to hear your ideas.

For the reference here the Quectel Datasheet and Schematics:

@kevin.yang.live What do you think of this problem? I’m sure your engineers can answer it.

Did you find the answer? I’m doing something similar and it’s important for me to know the answer to your question:)