Subsequently, I have come across the following post after I posted my question:
this access renewal query
@leowarren34's reply to another similar query, states:
"Just request the license from the education website by downloading the installer for the version you need, you don't need to reinstall, it's just that fetching the license is tied to the download."
I followed the advice and it worked.
Step 1: Renew the educational access from the personalised "Renew Access" button on your account page.
Step 2: Use the "Get Started" or "Get Products" buttons to go to the products page and click "Get product" >> "ACCESS"
Step 3: The installer client will download (it's a small size).
Step 4: Open it. It will say that you already have the latest version of the product. Do you want to start it?
Step 5: If that particular product is already open, close it. Then click "yes" in the installer dialogue box.
That's it, your product will restart with the license in your software updated to the latest access information and the "expiring..." message in the title bar will disappear.