No, you will not. Buying the program does not guarantee, or even increase the chances, of any additional support.
The forum is run by volunteers, and is based on a mutual exchange of knowledge, assets, and in some cases even money - a community.
This means we have no obligation of providing support. This is the same in all forums, except for those that specify support is provided in the forums explicitly.
While Scirra does provide great support in the forums, your primary methods of learning construct 2 are still the manual, tutorials and experimentation. A more effective use of the forums, should your topics not be answered, is to use the search function to see if your questions have been asked before.