Issue with deviceid

I am facing with an issue with the operation "deviceid". It has recently started providing an apha-numeric string such as "collect:xVfhcufStwwqjUTB" instead of the IMEI.
I am using the form on an Android device. Is this an issue with software update or the android version that I am using?

Thanks in advance!

Hi @TaranaChauhan
We're glad you're here. When you get a chance, please introduce yourself on this forum thread. I'd also encourage you to add a real picture as your avatar because it helps build community!

we had to stop using IMEI as deviceID and that's the reason, you can read more about it here: Collect will need to stop using IMEI as deviceID and making simSerial and subscriberID available