Not for Elosotn flavor but not sure of the woolyss flavor as I'm not using itSo with some of these, the extensions are more difficult to install?
Read through the 4 pages on this thread and the manner extensions are uploaded NOT directly from Chrome Web Store are there. Basically, 3 easy methods include
1) Installing the Ungoogled Chromium Extension Installer extension
2) Go to crxextractor.com to install the extensions
3) Download the crx file (from either crxextractor.com or crx4chrome.com) for the extension and then drag-and-drop onto the extension page in UC
For UC you can also install extensions from non-Chrome Web Store. Chrome browser prevents you from installing from 3rd-party stores