We're always developing our components in the latest Joomla! and PHP environments! No need to be scared to run in troubles when your hosting company is updating their servers. We have probable tested it already ;)
Our code is fully Open Source, so you can make changes to the code as much as you like!
Making changes to the code? We can advise, but don't support your custom code. Using overides is the best thing to do!
All extensions are as responsive as possible built on the shipped Joomla Bootstrap 2.x.x Library! We will soon make all our products compatible with Boostrap 3 to make sure it works on all Bootstrap versions.