I got caught by all the positive inputs regarding the TV Frog box and purchased one in the end.
I received my box on July 31st, connected it and got an error message on the TV screen on a mismatch in resolution. I tried to contact their support, NO answer. I will return the crap and try to get my money back. I don't have big hope for that.
To everybody - don't waste your time and money on this!
Bottom Line: No, I would not recommend this to a friend