ARIS Cloud for Students - Link to Cloud Shop broken

Hi there,

as the ARIS on-premise version for students is currently not available, I have requested the cloud subscription.

But, when clicking the link to the shop, I get an error message "Invalid signature or link expired".

I've already tried several requests for the last few days. None of the URLs worked.

Could you please help me out with that issue.
It's really important for me to start my next project with ARIS as soon as possible. 

Thanks and best regards,
Julia