Thunderbird: Can't open adressbook or see calendar

# * I can't open the adressbook. # * And today it even did not exist or react - when writing a mail to often used adresses did not suggest in the "adress-square". # * On One.com I saved the csv-file and imported in Thunderbird. Now all adresses work. But still I cannot open adressbook manually or with Ctrl¨Shift-B. I also miss the "new mail" menu on top but find it under "meddelelser" (messages) or use Ctr¨-N. And nowhere I can find the Calendar. Maybe I refused the installation when I 14 days ago after a toál breakdown re-installed my Windows 10. I have tried to re-install ¨nd update Thunderbird. Yours Arne Dich fro´Denmark