@mgeffro I have done this but it doesn't seem to make any difference. Quiting opera, either with the menu option or with cmd+q, and restarting does not bring up the keychain question. I went into the keychain manually as you suggested. Opera will still not remember passwords. Log in somewhere and it happily asks 'Do you want to safe...' and there is no error message, but it won't recall. Although when quiting Opera and restarting, it is still logged in to the various websites so something is being remembered. I am running 10.13.4, by the way.