Install Live Start Page and there you can change search engine.

https://chrome.google.com/webstore/detail/live-start-page-living-wa/ocggccaacacpienfcgmgcihoombokbbj?hl=en

А если Вы откроете эти сайты и дождётесь полной загрузки. а потом обновите страницу FVD Speed Dial? 

You can't even open EverSync? 

What Windows do you use?

Переходите на LiveStartPage: https://addons.mozilla.org/en-US/firefox/addon/live-start-page-lst/

- возможность сменить поисковик

- живые темы

- погода

и многое другое

You can turn off Search in FVD Speed Dial in Settings:

What extension do you use? or you mean web-version everhelper.me/client ?

What addon do you use? Firefox Flash Video Downloader? 

You should install FVD Module.

What is your OS and browser version?

Hello! How did you set FVD Speed Dial as homepage? Use these instructions: 

1
Go to the extension settings and copy the address
http://nimb.ws/H1W7qP

2
Open Firefox Settings
http://nimb.ws/cokXtr

3
Select Home page settings

Replace options.html with newtab.html
http://nimb.ws/CMxYdg

Let us know if this doesn't work.

I can advise you to reinstall addon to clean your backup database.

We'll fix the bug with autosync settings in the next update.

Hello!

Theme production is freezed. We'll return to this later.

Thank you for your idea!