Next, find your email from SYSTEMAX with your key information it should be titled 'SYSTEMAX Information About Your Software License' and look something like this. I'm afraid to revert my computer because while we bought the computer with Windows 8, my mom updated it to 10 before giving it to me- reverting it might remove my programs, Paint Tool SAI and Clip Studio Paint, both of which are online purchases and one of which I got at an 80% discount so I will not be able to buy them again. Open the trial version of SAI, click Others, then System ID. I'm super bummed too, because I like the way the rest of this update feels, with the organized action center and the like. I've tried running troubleshooting options and compatibility within SAI (setting it to run at Windows 8 or the like) and even scaling the whole display of the computer- which has made everything else big, but hasn't done anything to my SAI.
PaintTool SAI has had 0 updates within the past 6 months. So with the new update to Windows 10, my Paint Tool SAI has become really small? Download PaintTool SAI for Windows to paint objects and make anti-aliased drawings on your PC. Hopefully Microsoft will fix the update soon. 'Certificate Download Password' that is written in your license information email is not a System ID. The best iPhone alternative is MediBang Paint, which is free. Is PaintTool SAI on iPhone PaintTool SAI is not available for iPhone but there are plenty of alternatives with similar functionality.
I still have Windows 10 (which I'm glad about because it's pretty), but I figured if anyone else has this problem- there is no solution for it. You have to input your own System ID for downloading the software license certificate, your own System ID is shown Others> System ID menu of SAI. Paint Tool SAI Paint Tool SAI 1.1.0 running on Windows 7 Written in C++ Operating system Microsoft Windows Size 2MB Available in Japanese, English. EDIT 8/27 I was unable to fix this problem, even with going to a computer specialist and asking them for help.