I work in an organisation which is having 802.1x Wi-Fi authentication so they provided me other wifi endpoint where 802.1x is disabled but still I am not able to blinkup the device.
Blinkup just sends the wifi credentials and an enrollment token to the imp.
Sounds like the alternate network they have provided has some other issues. Have you tried connecting with a phone? Does it have a landing page or similar? Wifi devices generally can’t get through those as doing so would usually require the device to comply with a legal agreement which isn’t really within the remit of a thing
What does the LED code indicate? That will let you know what stage of connection is failing.
The other question would be what phone are you using, and has the imp ever connected to any network? Old developer imps are over 3 years old now and the android support improved hugely over that time.
I am now able to blink-up my IMP successfully.
If I move from one wifi network to other then I have to blinkup my device again. In that case enrollment-token will be created again or earlier token which is in server will get used.