Can no longer upload my own Notebook cover

Can no longer upload my own Notebook cover

I've had Notebook for over a year and have been able to create my own notebook covers, but when I tried to upload my own cover for a new notebook today, the upload feature has suddenly been starred, requiring me to upgrade my account.  When did this happen?
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      Zoho Notebook is transforming. The new version will include exciting new features and a completely new user experience. The initial version will be mobile based, available for Android and iOS. A new web version will be available after the initial mobile release.   With the release of the new Notebook approaching, we're migrating most of your current data to the new version. Once the new version is released, there will be an additional window to migrate your data. We will not provide access to the