MinimServer 2.1 on QNAP TS-228A available or not?

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I am running MinimServer 2 on my QNAP TS-228A.
The configuration page shows:

MinimServer 2.1 is now available
For continued support and updates, please install this version
For more information, see this section

MinimServer 2.0.19, Copyright © 2012-2021 Simon Nash. All rights reserved.

Your license type is Full. For more information, select the License tab.

But when I go to the App Center as instructed on https://minimserver.com/install-qnap.html I see MinimServer with an Open button and no Update option.

So according to the App Center I have the latest available version, but according to the configuration page there is a newer version available and I will lose support if I don't update.

What should I do?