I had the same problem and after restarting Opera it worked but I got the following message:

"There are many others joining right now, so I’ve added you to the waiting list. I'll notify you in the coming days as soon as access is available."

So maybe this is due to some limitations as it is fairly new. Was the same with ChatGPT in the beginning tbh.

I had the same problem and after restarting Opera it worked but I got the following message:

"There are many others joining right now, so I’ve added you to the waiting list. I'll notify you in the coming days as soon as access is available."

So maybe this is due to some limitations as it is fairly new. Was the same with ChatGPT in the beginning tbh.