Hi Awa,
Thank you for contacting the Microsoft Community.
I recognize the significance of obtaining the registration key for the practice test you purchased, as it is crucial for your exam preparation. Let me provide you with the necessary details to address your concern.
For me to verify your account and have the case be forwarded to our Support Team for recommendations, kindly provide us with the case number or copy of the email you have sent to Mind hub through the private message I initiated. Please refer to the image below to access your private message.
On the other hand, since you have an upcoming exam, you may reach out to Pearson VUE for immediate assistance with rescheduling options and other recommendations while we look into your case. Pearson VUE can access your exam details and check the situation. Their website offers the option to contact them via a live phone call for real-time assistance. You can select your region to see all the available support in your area. Additionally, they have introduced a feature that allows you to speak with an agent through live chat.
I look forward to your response. Please note that if no response is received after two business days, the case will be closed and locked. After the case is locked, we will no longer be able to respond, even through Private Messages. Thank you.
Kind regards,