I tried another proxy, and it works! I can upload my own saves now!
Then I think it's time to make a topic to shop all of my works here.
I've remove all the logo in my works, you are free to use them after bought it :P
I hope my works can help you building your amazing things, so feel free to add any part of those into your saves.

Compact 24-h Digi-clock
Price: 1 vote / 256 usage

Check more information here： https://powdertoy.co.uk/Forum.html?action=vthread&forum=3&topic=2784
LoadSaveBlock(110196);


4x8 bit SRAM Chip : TPT4802
Price: 1 vote / 64 usage (Fancy version)
1 vote / 128 usage ( embed version)

Check usage and more infomation here: https://powdertoy.co.uk/Forum.html?action=vthread&forum=3&topic=2842


Fancy version (with display inside ps: the switch display is not visible in Fancy mode under 45.2)
LoadSaveBlock(110199);

Embed version (you can use for your CPU building)
LoadSaveBlock(110170);