I have hosting plan for my domain aungcho.tfcph.com and I let my another domain structsoftlab.com which is hosted as a sub-domain of aungcho.tfcph.com. Aungcho.tfcph.com is ok, but structsoftlab.com is not OK since a few weeks ago. I was not able to manage CPANEL also.
If someone has problem like this, please post how to recover this and why.

structsoftlab.com loads up fine here.

First thing you should do is try load it from another computer, like at school or work or a family members house - anywhere but your computer. If it works there, then its your PC, if it doesn't... then PM me because it works well from this end.