I paid for Creative Cloud for Students, but I can't open the apps. They prompt me to buy it (again)

[#1]

I was using Adobe Creative Cloud using their free at-home access until it expired, so I purchased Adobe Creative Cloud for Students to continue my course under lockdown. 

I bought Creative Cloud and received a confirmation email on July 23 (subject: "Thanks for your purchase") which contained a link to confirm my account and create a password. I did both and received another email on July 24 (subject: "Welcome to your Creative Cloud membership").

I had already installed Illustrator, Acrobat DC, Photoshop, Lightroom and Lightroom Classic during the period of free at-home access, and after I purchased Creative Cloud for Students on July 23, I had access to those apps until about a week later (I don't know the exact date), when access suddenly stopped. When I attempted to access the apps, I instead received a prompt to buy the app or start a 7 day free trial.

I checked my bank statement, and it records a payment of $21.99 to Adobe Systems Pty Ltd Sydney AU AUS on July 28, with the value date of July 23.

Thinking that I may just need to download the apps again, I opened the email "Welcome to your Creative Cloud membership" from July 24 and clicked the link to download Illustrator. This installed the app, but when I opened it, a window stated that I had merely started a 7-day free trial. Creative Cloud Desktop confirms that I have started a 7-day free trial for Illustrator and I do not have access to the other apps unless I buy them or start free trials with them. 

I have already paid for Creative Cloud for Students. How do I get access to the apps? Since Adobe is already taking payments from my bank account for the purchase, I do not want to buy it again because I'll pay double. Please help me, as I need at home access to complete my course.

[#2]

I was using Adobe Creative Cloud using their free at-home access until it expired, so I purchased Adobe Creative Cloud for Students to continue my course under lockdown. 

I bought Creative Cloud and received a confirmation email on July 23 (subject: "Thanks for your purchase") which contained a link to confirm my account and create a password. I did both and received another email on July 24 (subject: "Welcome to your Creative Cloud membership").

I had already installed Illustrator, Acrobat DC, Photoshop, Lightroom and Lightroom Classic during the period of free at-home access, and after I purchased Creative Cloud for Students on July 23, I had access to those apps until about a week later (I don't know the exact date), when access suddenly stopped. When I attempted to access the apps, I instead received a prompt to buy the app or start a 7 day free trial.

I checked my bank statement, and it records a payment of $21.99 to Adobe Systems Pty Ltd Sydney AU AUS on July 28, with the value date of July 23.

Thinking that I may just need to download the apps again, I opened the email "Welcome to your Creative Cloud membership" from July 24 and clicked the link to download Illustrator. This installed the app, but when I opened it, a window stated that I had merely started a 7-day free trial. Creative Cloud Desktop confirms that I have started a 7-day free trial for Illustrator and I do not have access to the other apps unless I buy them or start free trials with them. 

I have already paid for Creative Cloud for Students. How do I get access to the apps? Since Adobe is already taking payments from my bank account for the purchase, I do not want to buy it again because I'll pay double. Please help me, as I need at home access to complete my course.

[#3 · Accepted solution]

Thank you for posting your query here.

Kindly refer to the following help article for Revert to trial https://helpx.adobe.com/manage-account-membership/cc-reverts-to-trial.html 

Also, please try to  Open CC Desktop App and Click the gear icon > General tab > Settings. Select "Always keep Creative Cloud up to date." Once done , Click on your Avatar (top right image) and Sign-out of Creative Cloud and Close all apps.
Once done, please Restart your computer and Open CC Desktop app and Sign-in with your paid ID and password.

If the issue persists, please initiate a chat with Adobe Support Team by Clicking on :  https://helpx.adobe.com/in/contact.html and please be sure to Sign in with the registered email address on which you have Purchased the Creative Cloud Membership.

Thank you.