Thanks for your feedback, glad you've liked our platform!

We're planning to add HTTPS support in next release, as well as other features that are in development now.
Our team is multicultural 
User funds are securely spread over variety of cold storages/vaults, only small percent are used for daily operations.
I think it's hard to tell where is the better odds, because they really differs from match to match and from one bet type to another.
Some of odds are higher on BetOpen, some on the platform you've mentioned. But what we can say with 100% sure is that our odds are highly competitive in the market.