Flash Player, W8 & a site

Hi evreyone, hi everybody,

First I apologies for my english, I hope you will understand me

A genealogy site use flash player to display birth acts and others.

This display works on my old computer working with XP

This display works on the PC of my brother in law

This display works on genealoy collegue.

The display come  but it is not lisible (blurred) on my PC

This is the same with MSIE, Chrome or Firefox.

That's works on other genealogy site

What can I do ?

OS : W8

MSIE 10

Firefox 28.0

Chrome Version 32.0.1700.76 m

Adobe 13.0.0.214

Thank's a lot

JLR