Model Mania X design issue

I have participated in the model mania competition.

After going through all the process given in the invitation email, I am still unable to access the platform.

X design doesn't open as it says no collaborative space available and connection unsuccesful.

Please assist me with this problem.

Model Mania ​​​​​​​xDesign ​​​​​​​Edu ​​​​​​​3DEXPERIENCE ​​​​​​​