@sgunhouse Unfortunately I have had to completely uninstall Opera GX as well as my user data and upon a clean install not only can I login to the Opera forums now but Amazon UK works fine. I do not know what caused the issue because as I said, I tried everything down to clearing my browser cache, passwords, site cache, etc.

I have been unable to load Amazon UK on my computer but only on Opera. I have tried wiping the cache amongst other things. I cannot seem to post on the Opera forums on Firefox and I cannot seem to login to the Opera forum on my main computer in the Opera browser. I am about at the point of giving up using the browser.