TS3.1 - deleted my acc, boohmarks and setings (+plugin, skins and other)

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Hello. I yesterday updated TeamSpeak to version 3.1 (alpha) and I have a huge problem. My main the server did not work in version 3.1, and so I decided to once again install 3.0 and here I started the problem. To avoid data loss installed TS 3.0 to a different folder. Unfortunately, it did not... TS3.1 - deleted my acc, boohmarks and setings (+plugin, skins and other)