S6 Edge IMEI Corrupted

I couldn’t make any calls with my S6 edge and when I checked my IMEI it is different to the IMEI at the back of the phone. I am not rooted but I rooted just to get the EFS folder and I don’t know what to do anymore. I would like someone to change the Imei for me so it works. The model Is G925F and is unlocked when I got it new I am the only owner and bought the device at launch. I have never flashed any roms or rooted until now just to get the EFS folder.

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