The main problem is that opera is using the computer's system proxy settings to connect to the Internet, because I have a seemingly unchangeable wrong proxy settings that don't work most of the time, which is the reason I don't use opera for most of the time like I used to before, the thing that makes me almost totally depend on another company's products, however I like opera, but I can't use it because it can't connect because of that problem
P.S. New opera has more stability and a beautiful design and other cool features, but please before upgrading the version, make surveys about features the users liked in the previous versions