Since Upgrade from 11 to 12.1 Wifi and 3G show an ! in the Icon - Galaxy S II Q&A, Help & Troubleshooting

Hello @ all
My Cyanogenmod 12.1 is not able to detect that I have Internet. the WiFi and 3G Icon contain the ! Symbol.
also my Mobile phone do not anymore connect to any saved WiFi. Because he says he do not detect Internet on it. If I connect manually Internet works without Problem.
This Problem appear since I upgraded from Cyanogenmod 11 to 12.1

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Question Hotspot connects but no internet after android 12

I have updated to S2RKS32.92-11-21-12 rom via the Lenovo RSA (rescue & smart assistant app) as the OTA was not working (I have unlocked bootloader).
This was reported to be the latest rom (android 12)
Everything seems fine but when I turn hotspot on the other devices connect but cannot get any internet. It was working with the same devices when on android 11.
Any help welcome.
I tried a few things.
Firsrt of all, besides wifi hotspot not working, I also had no usb tethering or bluetooth tethering. So, no way to share my mobile data connection.
I tried another android 12 release (KYOTO_RETAIL_12_S2RKS32.92-11-30-8_subsidy-DEFAULT_regulatory-DEFAULT_CFC)
It did't fix anything.
So, I went back to the latest android 11 release I could find: KYOTO_RETAIL_11_RRKS31.Q3-19-98-4_subsidy-DEFAULT_regulatory-DEFAULT_CFC
This is working as before.
The other roms I found from https://mirrors.lolinet.com/firmware/motorola/kyoto/official/RETAIL/
and I followed this procedure to flash:
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