Invalid SDK-ID

I want to download the trial version of solidworks and it shows the download process like this 

but after this when I enter the right SDK-ID , since it says that I get the trial code via email while the downloading is going on , it says the SDK-ID is invalid 

As you can see that I entered the right SDK-ID but this still happening again and again . 

please resolve this issue as I need to inatall the software urgently .

 

Edu SOLIDWORKS