HughesNet doesn't block apps from functioning. The problem may have to do with the strength of the wifi, or whether you are out of data (which slows you down considerably). It may also have to do with the time of the day and how many people in the area are using HughesNet at the same time. Satellite internet is an excellent technology, but the satellite has limited broadband that has to be shared by a large number of subscribers, and this can tax the system. When that happens, a lot of people in the same region can experience issues.
In short, there could be lots of reasons why you're experiencing the problem, and it'd be a good idea to ask for tech support about it.
To do that, go to the tech support section and post your issue there. Just click the blue button labeled +Start a topic and post your issue, providing as many details as you can.