Floccus extension stuck/not functional

[Talkabout]

Hi,

I tried to install "floccus" extension from the chrom web store: https://chromewebstore.google.com/detail/floccus-bookmarks-sync/fnaicdffflnofjppbagibeoednhnbjhg?hl=en The installations seems to be successful, but the extension is not working properly. It is grayed out in the extension menu and when trying to access its config page I get an error page. It seems some API is missing, but I was not able to dig deeper as the developer tools did not show any further information.
Would be great if this extension would work, as it is a great tool for synching bookmarks fro different sources.

Thanks!