Technical Support for Jaksta Media Recorder

I am recording off Eurosport Player but I am only getting 1200x680 (60fps) video quality, which is much poorer on playback than the quality visible in Eurosport Player itself.  I have set Request Best Output Size to 'No' (as when 'Yes' this was limiting video quality partially to 1080x610).

How do I ensure I capture the best video quality available from Eurosport Player?

Why is the Jaksta quality so much worse than when viewed in Eurosport Player itself?

Thank you for your help.

[I have purchased the Jaksta Media Recorder software, but not under this Gmail account - as your site will not allow me to log in under my normal e-mail address.]