Cannot enter new license key for CCleaner Android Professional Plus

Hello, today I upgraded from CCleaner Pro to CCleaner Professional Plus (two year subscription for 3 devices). I was able to install it on my laptop easily but while in the app on my (Android) phone, when I tap on “already purchased?" it just takes me to the previous page and there is no option to enter new license key. I have tried re-installing the app and followed the directions for installation.

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I see that you have already found the existing recent thread with a similar issue and are posting there, so I will close this one to keep things in one place and avoid confusion.