so today my shop has finally reached over 100,000,000 sP in purchases (Total Profits: 100,679,054 sP) and I clicked around everywhere to try and get the achievement but it's still registered that I've only made

89,915,859/100,000,000

help?

Go to the 'Edit Shop' section in your shop, it should update there c:

ahaha, well thanks. the one button i did not press. :( now i feel silly.