Where to start...

First: Thank you for the great theme.

Second: For me it is first time to do such site with mobile apps, so please forgive me for the newbie questions.

Third for everyone: If you like to do and have plan to do question and answer website, then there is plenty of CMS as free and paid, but my suggestion is to go with DISCY. It have plenty features what and where to set up.

Sadly we cant make or dosent have such feature that before user register - user cant take plan with stripe indentify free or paid. I mean user identify hes with stripe and then he can start to join -but hey! Don't worry i have solution! Take WP FUll pay plugin on themeforest what works perfectly with discy too. It is easy to set up and just usergroups must change :D

Long comment. Hope u can get it what i mean :D

My english isnt native so always if smth is dismiss then please ask :D