Welcome onboard. I checked your platform with my mobile but seems the site can not be fully accessed with mobile phone but only desktop or laptop as the case maybe.
You are talking about testing an open order and I ask is your project on beta phase? Are you as well giving out your beta. While going through your site, I found a particular place of integration of wallet. Is it not more of granting you access to ones exchange wallet? What measures have you out in place security otherwise? Let us know with facts as this is a good project but you will have to prepare for the traffic and possibly high security tech to protect users account.
I will also advise you do a review so as to give room for more and better development and upgrade as well.
They don't have the app yet I guess. But I'm a bit skeptical about this kind of service since it might collect your data and put it all in one database which will connect all your accounts from different exchanges. It's an interesting project though. I can only see how and where the project will go if successfully used by many.
He would get some testers and ask them to find bugs in your project. Maybe little fees for finding bugs and testing exchange exchanges.
That will do the job.