Noticed similar issues with official Australian VISA / immigration pages. You can't simply fill some forms with your email address using Finnish keyboard. Why?

Noticed similar issues with official Australian VISA / immigration pages. You can't simply fill some forms with your email address using Finnish keyboard. Why? Because they block usage of AltGr button on their page. They also prevent using clipboard blocking copy paste option for that sign. User has to be smart enough to switch to US keyboard and then enter @ sign and then switch back. So this is nothing new, but it's absolutely rude from part of the site designers to vandalize basic functionality like that. Normally @ is produced by AltGr + 2. I guess they got BOFH department, let's make this really annoying and prevent people from getting their business done, laugh.