I created 8 add-ons for firefox. chrome and opera at regular interval. I tried submitting my add-ons to all three browsers. Firefox approves in 10 mins. Chrome approves in less than 1 hour. But Opera? God knows. Submitted long back. still under moderation without any feedback. Only one got approved magically. https://addons.opera.com/en/extensions/details/language-transliteration/
Also I stopped submitting my add-ons to opera. because its going to be in moderation forever.