Perhaps I am missing one important link. Please tell me.. I searched this forum for the answer, but can't find it

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A few days ago, i installed the wallet. Everything is synchronized. But when I go to "Accounts" all adresses stay on zero
Generated blocks keeps blanc
I run 0.25.1 version and use it in Linux Ubuntu.
What important link am I missing here ? Anyone?

Do I need to register myself somewhere? Is it not possible to use the wallet at the moment?