You might want to switch back to the original account in Store which you are using with your Windows 8 PC. You can follow the instructions below to switch back to the original account.
• Go to the ‘
Settings‘ charm by pressing ‘
Windows key + I’ or
swiping from right and selecting ‘
Settings’.

• Select ‘
Your account’ from the provided options.
• You would be taken to the ‘Your account’ page. Now, you would see the option of ‘Change user’ option. Press it.

• Your Store account will be switched to the original one but, the apps you installed from other account will remain installed on your PC.
• That’s all!
source:windows8core