I don't see my dials in Google Chrome - there is only a blank page :(
Go to the profile directory as described here - https://www.chromium.org/user-experience/user-data-directory
Go to Databases.
Copy the contents of the folder chrome-extension_llaficoajjainaijghjlofdfmbjpebpa_0 to the temporary directory - this will be a file with a number as a name (for example, 130).
Open folder IndexedDB in your profile. Copy folder chrome-extension_llaficoajjainaijghjlofdfmbjpebpa_0.indexeddb.leveldb anywhere else.
Delete add-on FVD Speed Dial in Extension Menu - chrome://extensions/
Install FVD Speed Dial again - https://chrome.google.com/webstore/detail/fvd-speed-dial-3d-wall-sy/llaficoajjainaijghjlofdfmbjpebpa .
Close Google Chrome.
Check the file name in the folder: chrome-extension_llaficoajjainaijghjlofdfmbjpebpa_0. The number will be different (for example, 18). Rename file 130 (the one saved in step 3) to 18 and make the replacement in: chrome-extension_llaficoajjainaijghjlofdfmbjpebpa_0.
Return to the folder: chrome-extension_llaficoajjainaijghjlofdfmbjpebpa_0.indexeddb.leveldb to folder IndexedDB.
10) Launch Google Chrome.