By the way, saved passwords will only work if you install Opera in the same computer and with the same user.

@fckopera How you do backups? You create a copy of the data you want to backup and store it somewhere else.
Take a look at https://help.opera.com/en/latest/crashes-and-issues/#backup

I was expecting a simple button like "Backup your settings" are you really saying I have to go to all these locations

kmarks	Your bookmarks’ metadata, such as name and location
BookmarksExtras	Your bookmarks’ associated thumbnail images
Cookies	Your cookies (may not be essential, but you’ll need to sign back in to web services if deleted)
Current Session	Data about your current browsing session including open tabs, location on the page, form data, etc.
Extension Cookies	Cookies associated with your installed extensions, such as location data for a weather extension
Favicons	Favicons associated with pages added to your bookmarks bar
History	Your browsing history
Local State	Your internal browser preferences, such as the last-seen version number and download location
Login Data	Your saved, encrypted passwords, readable only on the machine that created them
Preferences	Your current browsing preferences and information about your profile
Visited Links	The location of links you’ve already visited, used by Opera to display them as visited
Web Data	Your autofill and other data imported from IE7
Folders to back up
Folder name	Description
Extension Rules	A storage area for your extensions’ rules that need to be persisted
Extension State	A storage area for your extension’s states that need to be persisted
Extensions	Your installed extensions
IndexedDB	Data associated with sites you visit that use Mozilla’s IndexedDB API, a structured database indexing system
Local Extension Settings	A storage area where your installed extensions can store local data
Local Storage	A storage area where sites you visit, your extensions, and Opera can store local data
Sync Data	A storage area for synchronized browsing data (sync services should still work if deleted, but your Opera account may become unstable)
Databases	A storage area where sites you visit can store local data
Themes_backup	A storage area for your downloaded or manually-installed themes