Hi,
I would like to rollback to a previous version but I am not very tech savvy. I am running macOSX mountain lion (or the one before) and I desperately need to get back the ability to use tab stacking . My life revolved around this feature. Could some kind person please help me work out how to get back to a version of opera which had this feature? I also miss session saving and private tabs (as opposed to windows)
Thanks in advance