emClient does not found the mails and license

In Nov. 2023 i did buy the pro License. Yesterday i did import some outlook pst files and new mail-kontos.
Afterwards the space of C: was very small. Because of this i chanced the path for saving the mails to A:\ mypath
Yesterday all worked correct. But after i started the emclient today no one of the mails were available.
Instead i saw a screen of a Demoversion of emclient, but if i went to the license menu i saw my license. Screenshot attached.

Can someone help me to solve my problem?
Thank you!
Greetings from bavaria!

Changing the path doesn’t move the database, and it won’t be applied until you restart eM Client:

So, you were still using the old database until you closed eM Client. When you started it today, it was the new blank database. Now you need to move the old data yourself to the new location.

With eM Client closed, move the contents of C:\Users\yourusername\AppData\Roaming\eM Client\ to the new location. You may have to enable hidden items in Explorer to get there.