https://forums.opera.com/rules
Use a descriptive and relevant title for new threads. Try to use at least three words in the thread title.
Be clear and concise when describing the problem. Be specific and remember to include important details, such as the exact error message or address of the site you're having trouble with.
Now read and follow https://forums.opera.com/topic/23068/instructions-on-posting-about-problems-in-opera-for-computers