Hi Atul and welcome to Oxwall :)
Regarding your questions,
Ross our team member for the forums will have to chime in on these as he would have a better idea but i can atleast offer my thoughts to you.
A. I have never tried to encrypt the backend with something like ionCube. But my initial guess is that the updates from oxwall might fail and also the cron might have an issue with it as well as the plugins. I am not saying it cant be done but it might be an interesting integration challenge. But of course ross will know much better than me.
B. This is def something for ross to answer, i would not know where to start on that one.
Regarding support - If you are in the USA as i am, then they work when we sleep. I am a night owl so i am up with them. The support here is fair, you will see if you poke around that questions get answered. There may be times you may have to wait a bit, but we also have volunteers such as myself and other community members that like to help people.
Even though they may not know the answer, they will try to help and learn together because they know that working together everyone wins. We also have some Oxwall veterans around that will help as well.
Like all entities on the web Oxwall faces many of the same challenges. The team is small but they do a pretty fair job considering their size and what they have to do. People come and people go as with all communities and that includes staff members and community members. And it is times like these that really show the dedication and devotion of other community members that love this software.
As you know being a developer yourself all things have issues and just when you get something pretty perfect someone deprecates something or times change, needs change, and we have to start all over again. :)
I find that most of the issues either have to do with very very large sites as in 10-20 thousand members at times or sites that have a funky setup. I very rarely have an issue with the software myself. But for those (and forgive me here as i am really rusty on these things) those that have Xampp, wamp, windows installs, or some other really funky setup that push the bounds of the software are the ones i notice with most of the issues.
I find that if you are going to run this on a linux, apache, cpanel setup then you should have very little issue. And of course that is what i am used to and feel comfortable with as well so that could be a big reason for that. Also because now that im over 50+ i want everything automated so i don't have to think too much :)
I think if you give Oxwall a real chance you will learn to love it as many of us do. Also in time when you feel comfortable we always need more good honest plugin develpers that will support their products. There are plenty of people on here to help you with that too when you feel ready :)
Again welcome to Oxwall, hope youll stick around a while :)