A Google AdWords Help thread has one Opera browser user complaining that he can’t sufficiently manage his Google AdWords account using that browser.
The Opera user said:
Google actually replied to him. Paddy from the Google AdWords team said:
This reminds me of the frustrated iPad users not being able to manage their accounts using an iPad. I am not sure on the status of that but I believe it still is not a 100% functional. There are some iPhone apps people can use to manage their accounts. There was also some speculation of a mobile AdWords management site but I have yet to see that come about.
Using Opera? Switch to Chrome. Okay, switch to something else besides Opera for now.
Forum discussion at Google AdWords Help.