@KATREyuk Please vote for the existing feature requests, and post only one request per topic. Sync is work in progress, and it may be years before all requests can be fulfilled. See vivaldi://sync-internals/ for sync items that are not yet enabled. There are currently 94 topics on Sync.
Read the advice on requesting a new feature.
Welcome to the Community. Here are a few links for your bookmarks that you may find useful:
Help on Feature Requests • Add Search as Web Panel Vivaldi Help Forum Markdown Help Using the Forum Search Local Forums in your language Vivaldi Themes Modding Vivaldi Web Panels Vivaldi for Android Snapshot vs Stable Vivaldi's Business Model Vivaldi User Groups Help us grow