For those who required Linux wallet: I just compiled the linux wallet with the updated information in README.md.
It works! I will buy some to stake.

Just follow these steps:
git clone --recursive
https://github.com/spectrecoin/spectrecd spectre
./install_boost_1_67 # only necessary on Debian/Ubuntu/Mint/etc. If you have installed Boost 1_67 before, you may ignore this command for now
./autogen.sh
./configure --enable-gui --with-qt5=/path/to/qt/version/compiler # leave out --enable-gui to build only the console wallet
make
Thanks mate, I'll check it out!!
The wallet works smoothly. And the stake is also working.
However, Cryptopia sucks. I bought some XSPEC and withdraw them yesterday. My XSPEC is still under processing for over 24 hours.
XSPEC will require some big and friendly exchange other than Cryptopia.
No, staking doesn't work. I have not received anything since 18th April, that is 6 weeks ago. And I have my computer 24/7 online because I mine on it. The wallet even says "staking".
This coin is a fucking joke and being shilled by people like it's second Jesus coming.