Try again! And be sure to follow the request for information pretty closely. We get lots of requests, so sometimes if they don't provide what we need (e.g., don't mention the school they're attending or something) we have to reject it, and since we get so many, it's hard/impossible to provide individual feedback.
I got mine more than a year ago in less than 30 mins. I was pretty surprised, since my student email address hostname uses a country-specific tld instead of .edu.
Same here (.nl). I guess GitHub has a list of approved domain names for this? Makes sense as .edu seems to be used in the US mostly. In that case it might take a while if you're the first student from your university to register.
