VPN funnel / prompt not working

Hey, I’ve been trying to set up a proxy for 2 days now on my phone, I’m using Samsung Galaxy A70, Proxidize version is 1.0.2. and Android is 11.
I’m not getting the VPN prompt no matter what I try. I held i and closed the app 50 times already, I’ve reinstalled the app 20 times by now and also factory reset the whole phone 4 times. Nothing works, I’m simply not getting the VPN prompt asking me to allow it, so the VPN funnel is red.
Please can you have a look into this problem and tell me a fix?
Thank you

Hello, thank you for reaching out! To help troubleshoot this issue, could you please confirm whether you have any third-party proxy or VPN applications installed on your device? These can sometimes interfere with the connection.

Also, please make sure of the following:

-Your device has sufficient mobile data available.
-There is only one SIM card inserted, and it is placed in SIM slot 1.

Once you’ve checked these details, please let me know.

I have no other proxy / VPN installed, I have enough mobile data and there is only one SIM installed.
Thanks for the reply!