To sign in, you'll need to disable your ad & tracker blockers for a specific site. First, attempt to sign in. When you get the auth failure page, in Opera click Privacy Protections (shield icon) > Turn Off For This Site. Do this for both ad & tracker protection sections of Privacy Protections. Now try logging into PB again, and this time it should work.

@tiki2020: At time of this post, Opera consolidates extensions under a single icon (mine looks like a box rn) in the toolbar. There should be a push-pin looking icon next to each listed extension under that menu that'll make that ext always show in the toolbar.

To sign in, you'll need to disable your ad & tracker blockers for a specific site. First, attempt to sign in. When you get the auth failure page, in Opera click Privacy Protections (shield icon) > Turn Off For This Site. Do this for both ad & tracker protection sections of Privacy Protections. Now try logging into PB again, and this time it should work.