RM500U-CNV 4G/5G not connect to the internet

I have Raspberry pi board and I have trying to interface with HAT but I have facing the problem related internet issue. I dont know why after following all steps but still cant acess the internet.

I have follow this tutorial for RPI ( Raspbian system) https://www.waveshare.com/wiki/RM500U-CN_5G_HAT

here the attache images are

Dear @Jonty
image
From this, you had made a call successfully.
Please check again if you need to configure anything on Raspberry pi board.

Dear @silvia

Thanks for the reply. I have checked the Raspberry Pi configuration and don’t think any changes are needed on that side. However, I noticed something during my observation, “when the module connects to the Raspberry Pi, the vertical up-down arrow symbol (Internet connectivity symbol) on the top right of the screen glows blue, and an IP address is shown. But after about 20 to 30 seconds, a cross appears on the arrow. Could this indicate a misconfiguration?

I am also sharing some pictures please let me know if I might have missed any configuration on the module side.

Please help check

AT+QNETDEVCTL?
AT+QCFG=“clat”

As I know, Jionet only support IPv6.