I cannot access the 3DEXPERIENCE Platform.

Hello, I purchased 3DEXPERIENCE ENGINEER for Students, and my subscription is active. However, since around May, I have been unable to access the 3DEXPERIENCE Platform. The window is completely blank and nothing is displayed.

I started using it in December, but the screen frequently crashed, and several times I lost access to the 3DEXPERIENCE Platform. In reality, I was only able to use it for about three months.

I want to use CATIA, but at this point I can hardly use the platform at all. Is there any good solution to this problem?

Edu 3DEXPERIENCE ENGINEER