How to disable the extension item in the browser context menu? I don't need it there at all

I can't update to the latest version of SD. On one of my computers the version shown is 3.3.8 and on other is 2.4.7 as it is shown here on this website. There is a comment here from the developer pointing out that there is indeed 3.3.8 version. Why can't I update to the latest version?

This addon is essential to my daily browsing. I gave it 4 stars instead of 5 because it doesn't look the same as it does in chromium browsers. Is there anyway we could get this extension updated to look like it does in Microsoft Edge and Chrome?

When I installed this add-on first about a month ago I could put custom icons via URL link for every visual bookmark. Then a couple of days ago this changed to be a PRO function requiring payment. How so?
I'd pay, but my card is not working for that since I'm a Russian citizen.

Since last update, I can't change the size of thumbnails. Many pictures on my computer are too small and doesn't cover the thumbnail.

Can you add an option for it, as for the background ?

이제 해마다 돈내는걸로 바뀌네.. 아쉽다. 그동안 저렴하게 잘썼는데.

Помимо самих закладок есть возможность создавать группы. Есть сохранение и восстановление настроек. Так же большой плюс - настройки сохраняются в читаемом обычным блокнотом виде (обжегся с FVD Speed dial). Единственный недостаток (или я не смог понять) - невозможность добавить в основные при запуске "лисы". Т.е. на новых вкладках она запускается, а при старте - нет.

Great, just imported all my settings/theme/bookmark tiles from Chrome with Premium. However no sidebar bookmarks like I had in Chrome :(

Only 4, because custom CSS is not working on Firefox at all. Will there be any fixes?

希望增加批量选择，批量移动、批量删除功能。
增加刷新全部缩略图的功能。

this extension does not work under firefox 71 . Error: An unexpected error occurred ExtensionUtils.jsm
and also , all my bookmarks can not sync